There is a dispute among motorists: is there a non-killable engine or not? Do such motors actually exist? This article will provide a list of cars with millionaire engines.
What is a millionaire engine?
The first step is to find out what lies behind this phrase “millionaire engine”. This can be deciphered as a power unit that has covered a distance of more than 1 million km.
Many will immediately begin to object that this is all a myth and this cannot be, but in fact such motors exist, and there are many of them.
The impeccable reliability of the internal combustion engine is determined by the following main indicators:
- maintainability.
- Durability .
- Reliability.
But it is worth saying that the concept of millionaire engines does not mean at all that the car will pass such a mileage without major repairs. This means that the manufacturer provides a resource of parts for a run of one million. The undoubted leaders in the production of such motors are:
- Japanese cars;
- American-made cars;
- German cars.
It is also worth saying that not all engines will be able to pass such a mileage, because in many respects the condition will depend on the timely maintenance (TO) and driving style.
Which engine is better petrol or diesel?
Also, among motorists, disputes do not subside, which type of engine is more reliable and the resource embedded in it comes out, gasoline or diesel? To answer this question, it is necessary to resort to statistics that show that cars with a diesel engine are no longer killed. Motors that really ran through such a resource can be divided into several types:
- diesel . These types of motors have gained a reputation for durability and reliability;
- gasoline inline fours. Cars with such engines compete for popularity and reliability with diesel ones;
- gasoline in-line "six". These motors are characterized by high power, and there is practically no vibration on them during movement;
- V-shaped "eight". Such engines come in large sizes, and unlike the first three, they cannot boast of a long vehicle life, although this cannot be said about motors made in the USA.
There were also rare cases when a domestic GAZelle car with a 406 engine exceeded the mark of 1 million kilometers. We figured out what a millionaire is, now we should move on to a small list of such cars, because many motorists do not know on which cars such units can be found.
List of cars with millionaire engines
Now it is worth presenting a small list of engines that have really passed the resource laid down in them, i.e. are millionaires. Among gasoline, the following can be noted:
- Toyota 3S-FE;
- Honda D-series;
- Toyota 1JZ-GE and 1JZ-GE;
- BMW M30 and M50.
Among the diesel centenarians include the following engine brands:
- Mercedes-Benz OM602.
Well, now each model needs to be considered in more detail.
The Japanese 2-liter engine was born in 1982. The first models were produced with one camshaft, but after 5-6 years, cars with two camshafts began to be produced. Such motors were installed on Mitsubishi, Huyndai and Kia. Over the long years of production, they have been modernized several times.
It is worth noting that its licensed copy is still being produced at factories in China, and is currently being installed on a Chinese-made Brilliance car.
Toyota 3S-FE
Also, 2-liter Toyota 3S-FE engines are considered millionaires. Among the in-line "fours", he is one of the most reliable and not killed. The period of its production is from 1986 to 2000. 16 valve engine with four cylinders is highly maintainable, able to withstand high loads. If scheduled maintenance is carried out in a timely manner, such motors are able to pass over 500 thousand kilometers without major repairs.
Honda D series
The model range of the Honda car manufacturer, in its assortment, has more than a dozen different engine modifications, with volumes from 1.2 to 1.7 liters, and are rightfully considered not to be killed. In such engines, the power of the internal combustion engine reaches 130 horsepower, which is quite good for cars with small volumes. As numerous tests have shown, the D15 and D16 models are considered the most unkillable.
Toyota 1JZ-GE and 1JZ-GE
Such motors already belong to in-line "sixes", and they were produced between 1990 and 2007. They are presented in two volumes: 2.5 and 3.0 liters. There have been cases that some cars with such engines have traveled a million kilometers without a major overhaul. Some motorists call them "legendary". They were installed both on their cars and on some models of the American Lexus.
BMW M30 and M50
Cars equipped with an engine of such models should also be attributed to millionaires. The M30 model was produced with volumes of 2.5-3.4 liters, and had a capacity of 150 to 220 "horses". But the M50 model was produced with volumes of 2, -2.5 liters, and engine power from 150 to 195 horsepower.
The main secret of the reliability of these engines was in the cast-iron case of the power unit, and the timing was driven by a chain. Such motors are able to cover 500 thousand kilometers without the need for major repairs, and the resource laid down by the manufacturer is a million kilometers.
Cars in which there are such models of motors also belong to millionaires. They were produced in the period from 1998 to 2008, and were installed on almost all BMW cars that were produced during this period. In addition to high reliability, the main positive feature of such motors was the impressive dynamics of the car.
Mercedes-Benz OM602
This diesel engine was produced from 1985 to 2002, and had a power of 90 to 130 horsepower. As you can see, this model is not very powerful, but its main distinguishing feature is high reliability. If all the instructions of the service book are followed in time, then such engines are able to go under a million kilometers without serious damage.
Results
Based on the results of all the above information, it's time to take stock. Cars with millionaire engines exist, and there are many of them. But in order for the car to depart so much, it is necessary to carry out scheduled maintenance, as well as monitor the state of the internal combustion engine. There is also a contract engine, but it will be discussed in the next article.
Currently, a large number of various types of engines are in operation on ships, which are classified according to the following main features.
According to the method of implementation of the working cycle engines are divided into four-stroke and two-stroke. For the former, the working cycle is completed in four piston strokes (for two revolutions of the crankshaft), for the latter, for two piston strokes (for one revolution of the crankshaft).
By way of action A distinction is made between single-acting, double-acting and counter-moving piston engines, in which two pistons work in the same cylinder and move in opposite directions. Depending on the design, they drive one or two crankshafts. In single-acting engines, the operating cycle takes place in the upper cavity of the cylinder above the piston, in double-acting engines, in the upper and lower cavities. Double acting engines are rarely used on ships.
According to the method of filling the working cylinder with fresh air engines are either supercharged or naturally aspirated. In supercharged engines, air with increased pressure is supplied to the engine cylinders, created by a special supercharging unit. In naturally aspirated four-stroke engines, air is sucked into the cylinders by the piston through the intake valves; in two-stroke - the cylinder is filled with air by a purge pump at low pressure.
By design Distinguish between trunk and crosshead engines. In trunk engines, the role of the guide is performed by the lower (trunk) part of the piston, which transmits lateral pressure to the cylinder walls. In cross-heads, the role of the guide is played by sliders sliding along the parallels and transferring lateral pressure to them.
In the direction of rotation of the crankshaft engines are divided into reversible, having devices for changing the direction of rotation of the crankshaft, and non-reversible, constantly rotating in one direction.
In addition, engines come in right and left models. For engines of the right model (when viewed from the stern to the bow, for auxiliary engines - from the side of the energy consumer), the crankshaft rotates clockwise, for the engines of the left model - counterclockwise.
According to the location of the cylinders engines come with a vertical arrangement of cylinders (vertical); with a horizontal arrangement of cylinders (horizontal) and with an arrangement of cylinders at a certain angle (V-shaped, W-shaped, X-shaped, star-shaped and others). On ships, vertical engines are most widely used, engines with an arrangement of cylinders at a certain angle are less commonly used, and, as an exception, horizontal engines are found.
By the value of the average piston speed st engines according to GOST 4393-74 are conditionally divided into low-speed (with an average piston speed of up to 6.5 m/s) and high-speed (with a piston speed of 6.5 m/s and higher).
According to the frequency of rotation of the crankshaft engines are divided into low-speed (up to 250 rpm), medium-speed (250-600 rpm), high-speed (600-1000 rpm) and high-speed (more than 1000 rpm).
By appointment ship engines are divided into main - driving the propeller or main electric generators (during electric propulsion) and auxiliary - driving auxiliary mechanisms (generators, compressors, fire pumps, etc.).
All engines, including marine engines, according to GOST 4393-74, have a unified marking system using numbers and letters that determine the main design features of this type of engine. The letters indicate: H - four-stroke; D - two-stroke; DD - two-stroke double action; R - reversible; C—ship with a reversible clutch; П - with reduction gear; K - crosshead; N - supercharged. If the brand does not contain the letters P, K or H, then this indicates that the engine is non-reversible, trunk and naturally aspirated. The numbers in front of the brand indicate the number of engine cylinders, and the fraction after the letters indicates the cylinder diameter (numerator) and piston stroke (denominator) in cm.
So, for example, the engine brand 5DKRN 50/110 means that the engine is five-cylinder, two-stroke, crosshead, reversible supercharged, cylinder diameter is 50 cm, piston stroke is 110 cm.
Foreign-built engines do not have such a clear marking, since each company has its own designation system.
ICE marking according to GOST
Marking of internal combustion engines (ICE). The brand allows you to judge the main design features and dimensions of the diesel engine. Its technical and economic characteristics (power, speed, fuel consumption, lubricating oil, etc.) are given in the passport or form (manual).
Basic Description
According to GOST 4363-48, each internal combustion engine has a symbol called a brand. The number in the brand indicates the number of cylinders, the letters indicate the characteristics of the engine and the fraction - the diameter of the cylinder (numerator) and the piston stroke (denominator) in centimeters. *Correctly expressed in millimeters! In addition, after the fraction, there may be a number indicating the upgrade number.
ICE characteristics designations
In accordance with GOST 4363-48, the letters in the brand of the engine mean: H - four-stroke D - two-stroke DD - two-stroke double-acting G - gas R - reversible S - ship with a reversible clutch P - with a reduction gear K - crosshead N - with a pressurization
Additionally
Some plants, in addition to the marking required by the standard, assign factory brands to manufactured engines. For example, the brand according to GOST engine:
6ChSP 15/18 is deciphered as follows: six-cylinder four-stroke marine with a reversible clutch and reduction gear, with a cylinder diameter of 150 mm and a piston stroke of 180 mm; factory brand of the engine 3D6. 6CHN 31.8/33 - six-cylinder four-stroke supercharged, with a cylinder diameter of 318mm and a piston stroke of 330mm; factory brand D50.
Source: Book "Marine Diesels (device, basic theory and operation)" A.F. Gogin, D.F. Kupriyanov, E.F. Kivalkin
Wikimedia Foundation. 2010 .
At present, the consumer often faces the question - how to decipher the marking of the electric motor. In Soviet times, such a question practically did not arise due to the fact that the marking of electric motors did not differ depending on the manufacturing plant and was regulated by regulatory documents.
The main types of engines were called A, A2, AO2, 4A, 4AM. Electric motors produced in the CMEA countries differed in marking, for example, in Bulgaria, instead of marking 4AM, "MO" was used and instead of 4AMN - "M".
Now many manufacturers use their markings. Here are the main types of brand designations for general industrial low-voltage asynchronous electric motors from different manufacturers.
Marking consists of several main parts:
1. Electric motor brand(electric motors of all brands are the same in terms of connecting dimensions and, in most cases, ceteris paribus, are interchangeable, i.e. if you have an ADM90L2U3 engine installed, then it can be replaced with an electric motor of the brand AD90L2U3, A90L2U3 or AIR90L2U3):
During the Soviet Union
- since 1949 - A(IP23) JSC(IP44)
- since 1961 - A2(IP23) AO2(IP44)
- from 1975-1980 - 4A(IP44) 4AH(IP23) 4AM(IP44) 4AMN(IP23)
- from 1985-1995 - AIR(IP44, IP54), 5AN(IP23) 5AMN(IP23)
Currently: AIR, A, 5A, 5AM, 5AMH, AD, ADM, AIRM, (AO3, AO4 are produced by CJSC "BEMZ"):
"AIR" produce (along the height of the axis of rotation):"A" - OJSC "ELDIN" - from 71 to 132 and from 180 to 355.
- JSC "ELDIN" - 160
- OJSC "VEMZ" - 180
- OAO "Mogilev plant "Elektrodvigatel" - from 56 to 180
- JSC "Polesyeelectromash" - from 71 to 112
- CJSC "Moselektromash" - from 56 to 71
- OJSC "Ukrelectromash" - from 63 to 100
- JSC "Elektromotor" - 71, 80
"5A"- OJSC "VEMZ" - 80 (out of production), 200, 225
"5AM"- OJSC "VEMZ" - 250, 280, 315
"5AMH"- VEMZ OJSC - from 132 to 180 (recently renamed, previously called: 112 - 5AM (out of production), 132 - AIRM, 160 - 5A, 180 - AIR)
"HELL"- Sibelektromotor OJSC - from 71 to 90 and from 132 to 225 (not produced)
"AIRM"- OAO "Sibelektromotor" - 112 (not produced)
"AIRM"- OJSC "Elektromotor" - 63, 100
"ADM"- OJSC "Uralelectro" - from 56 to 132
"AO3", "AO4- CJSC "BEMZ"
2. Sign of modification(several designations can be used simultaneously in one brand, the list below is not complete).
- C - with increased slip
- E, 3E, EU - single-phase motor
- B - plug-in
- P - attached
- M - modernized
- X - with aluminum frame
- K - with a phase rotor
- R - with increased starting torque
- Ф - with forced cooling
3. Rotation axis height.
In accordance with GOST 13267, the range of heights of the axis of rotation is 50, 56, 63, 71, 80, 90, 100, 112, 132, 160, 180, 200, 225, 250, 280, 315, 355.
4. Installation dimension along the length of the bed.
Ascending: S, M, L. (from English words: Short, Medium, Long)
It is also possible that there is no designation with a single installation dimension along the length of the frame at one height of the axis of rotation.
5. Core length with the same installation size.
Ascending: A, B, C.
6. Number of poles(or speed).
2, 4, 6, 8, 10, 12 or in case of multi-speed motors: 2/4, 8/6/4, etc.
7. Sign by purpose(multiple designations can be used simultaneously in one brand).
- B - with built-in temperature protection
- B1 - with bearing temperature sensor
- B2 - with sensor and anti-condensation heater
- E - with built-in brake
- E2 - with brake with manual brake release
- Zh, Zh1, Zh2 - with a special output end of the shaft
- РЗ - for motor-reducers
- Ш - for industrial sewing machines (also used in brand 5AN for a special design for pumps)
- P - increased accuracy in installation dimensions
- F - cold and oil resistant designation
- A - for nuclear power plants
- X2 - chemical resistant
- L - for elevators
- C - for pumping units
- SSH - for drying cabinets
- H - low noise
- K - according to CENELEK standards
- etc.
8. Climatic performance.
In order to order an electric motor, it is not enough to indicate the correct marking.
Marking is used to symbolize the type of engine and is carried out at diesel plants. Symbols for individual characteristics of diesel engines used in Russia and Ukraine, in Germany and other countries are shown in Table 5.1. Each country has its own designation of engines.
In accordance with the state standard, the designation of engines consists of numbers indicating the number of cylinders and letters indicating the characteristics of the engine, after which the cylinder diameter and piston stroke (in centimeters) are shown in fractions.
For example, the designation 64H18 / 22 stands for: six-cylinder, four-stroke, supercharged engine with a piston diameter of 180 mm and a piston stroke of 220 mm.
Brand 6DKRN 74/160 designates: six-cylinder, two-stroke, crosshead, reversible, supercharged, with a cylinder diameter of 740 mm and a piston stroke of 1600 mm.
Table 5.1 Symbols for engine characteristics.
| Characteristics | Countries | |||
| Russia Ukraine | MAN, Germany | Burmeister and Wein, Denmark | Sulmer, Sweden | |
| Four stroke | H | V | V | B |
| push pull | D | Z | V | - |
| Reversible | P | U | F | D |
| Crosshead | K | K | T | S |
| Tronkovy | - | G | - | T |
| With gas turbine pressurization | H | A, C | B | A |
| With reverse clutch | C | - | - | - |
| with gear | P | - | - | - |
| Diesel | - | D |
At the same time, diesel engines of some domestic plants have a special marking. In Germany, engine markings include stroke, number of cylinders and piston stroke. For example, the 6VD24 engine stands for a six-cylinder non-reversible four-stroke diesel engine with a piston stroke of 240 mm. In the presence of pressurization, and also if the diesel engine is reversible, the letters A and U are supplemented. For example, 8NVD - 48 AU.
On the training ship of the institute, the main diesel engine is 6NVD26-A-3 (six-cylinder, non-reversible, four-stroke diesel engine with gas turbine supercharging, piston stroke 260 mm, 3rd modification), and two diesel engines 64 12/14 are used as auxiliary ones.
Types of SPP with internal combustion engine.
Ship power plants with internal combustion engines are classified according to a number of criteria.
By the number of propeller shafts: single-shaft; twin-shaft; three-shaft, etc.
According to the method of power transmission from diesel to propellers:
With a rigid gear without changing the speed (the propeller rotates at the speed of the crankshaft of the main engine);
With flexible transmission (using hydraulic clutches, electromagnetic clutches; torque converters);
With electric transmission - diesel engines run on generators, and propellers are driven by propeller motors (PM);
With hydraulic transmission providing hydroreactive propulsion (on ships with water-jet propulsion).
By number of engines working for each propeller shaft: single-machine - one main diesel engine operates for each propeller shaft; multi-machine - two or more main engines operate on each propeller shaft, transferring their rotational energy to the propeller shaft through one common gearbox.
By type of engines used:
Same type when homogeneous types of engines are used;
Combined - several types of main engines are used (for example, diesel engines and gas turbines, etc.).
Propulsion type: with a fixed pitch propeller (FPS); with a controllable pitch propeller (CRP); with counter-rotating coaxial propellers; with water jets; with vane propellers.
Modern powerful main engines are made with supercharging and fuel jet spraying. Four-stroke diesel engines are made by trunk, two-stroke - by trunk and crosshead, as well as with oppositely moving pistons and several crankshafts.
Main marine diesels classified according to a number of characteristics.
1. By appointment:
All-mode, providing all speeds of the vessel from the smallest to full;
Accelerating (afterburner), providing full and close to full speed for short-term use;
Marching (economic course), providing a long economic course.
2. By design:
In-line with a vertical arrangement of cylinders, four-stroke with a number of cylinders from 6 to 12 and two-stroke with a number of cylinders from 5 to 12;
V-shaped with the number of cylinders from 8 to 20;
X-shaped with the number of cylinders from 16 to 32;
Star-shaped with the number of cylinders from 42 to 56;
Double-row - essentially two diesel engines connected by a common crankcase, frame and gear;
D-shaped two-stroke with oppositely moving pistons with a number of cylinders from 9 to 18.
3. By reversibility: non-reversible with reversible clutches or with reverse gears; reversible.
4. According to mass and overall characteristics, speed mode and resource:
Slow-speed heavy;
Medium-speed;
High-speed medium specific gravity;
Fast lungs.
Let us consider in more detail these types of diesel engines and compare them.
Low speed heavy diesels are mainly two-stroke with valve or loop purge. They are distinguished by high specific gravity (up to 55 kg/kW), large dimensions and low crankshaft speed. Such diesel engines are used for direct transmission of power to the propellers of large-tonnage sea vessels (tankers, bulk carriers, ore carriers, etc.). Leading Western firms have created a number of diesel engines of this class with a number of cylinders from 6 to 12, with a capacity of 30-35 thousand kW. For example, diesel engines from MAN-Burmeister and Vine. These include diesel 60MS. This is a two-stroke crosshead reversible with direct-flow valve scavenging and turbine supercharging.
Medium speed diesels are widely used as the main diesel engines of SPPs. These are four-stroke engines with high boost pressure, number of cylinders from 6 to 20 with in-line or V-shaped arrangement of cylinders, crankshaft speed 350…550 rpm. This speed of the crankshaft, as a rule, does not allow you to install a direct gear to the propeller. Therefore, reduction gears are used, connected to the diesel engine by elastic couplings. The resources of diesel engines and gears meet the high requirements of the marine fleet. Moreover, the total mass of the diesel-gear unit is 2.0 ... 2.5 times less than low-speed heavy diesel engines.
On various ships, medium-speed diesel engines of the following companies are widely used as main engines: MAN-Burmeister and Wein, Sulzer, Pilstik, MaK, etc. They, like low-speed diesel engines, are operated on heavy grades of fuel. An example is medium speed diesel engines.<40/54 фирмы «СЕМТ Пилстик», а также дизели фирмы «МаК» серии М601.
High-speed (high-speed) diesel engines average specific gravity. These are in-line and V-shaped diesel engines with a power of 740 ... 4500 kW at a speed of 750 ... 1500 rpm. Such diesel engines are used on vessels of limited displacement (tugs, small tankers, sea trawlers, river vessels) and as main diesel generators on ships with electric propulsion.
High-speed light marine diesel engines of complex design V-, X-, H-shaped or star-shaped. They are made with the wide use of aluminum alloys to obtain a minimum weight. They are used on the most high-speed vessels that require the development of high speed in light power plants. For example, on ships with hydrofoils, the power of serial diesel engines of this type reaches 3700 kW. They are distinguished by small diameters and a large number of cylinders (12…56). This type of engines has the least resource and this is their main drawback.
5.3.1 Diesel installations with slow-speed engines.
The layout, weight, dimensions and cost of the installation depends mainly on the characteristics of the main engine, and low-speed diesel engines are large and heavy. Therefore, they are placed in the middle part of the engine room. Most often, such diesel engines are used in single-shaft installations with placement in the diametrical plane of the vessel parallel to the main plane or with a slight deviation from the line of the propeller shaft.
Two-shaft installations are less common, and in the practice of shipbuilding there is a known case of the construction of a three-shaft container ship (Japan) with low-speed Mitsubishi diesel engines. This ship is equipped with two diesel engines with an effective power of 18.5 MW along the sides and one diesel engine with an effective power of 26 MW along the centreline.
It should be borne in mind that a multi-shaft plant is in many respects inferior to a single-shaft plant in terms of mass, dimensions, complexity, capital costs, maintenance costs, etc. the power of such diesel engines is 70 MW with high efficiency. For example, diesel engines of the Sulzer company of the RTA type in a 12-cylinder version.
Thus, single-shaft units with slow-speed diesel engines are the most efficient.
5.3.2 Diesel gear units with medium-speed and high-speed engines.
Such installations are the second most common and are used on sea vessels of the transport, technical, auxiliary and fishing fleet, as well as on mixed navigation vessels (river-sea) and on river vessels.
The number of revolutions of the crankshaft of medium-speed diesel engines (250 ... 750 rpm) exceeds the permissible revolutions of the propeller and therefore power transmissions (mechanical, hydraulic or combined) are included in such a diesel installation.
The set of main engines and gears installed on a common foundation frame, connecting-disconnecting or spring couplings is called diesel gear unit.
As a rule, one or two shaft generators are connected to the gears, which complicates the installation scheme, but gives a gain in fuel economy for generating electricity when the main engine is running. This solution also makes it possible to reduce the number of diesel generators of the ship power plant and save resources.
Reducers and couplings increase the weight (by 25...60%) and dimensions (by 30...50%) of the diesel-gear unit. However, in general, they are 1.2...2 times less than installations with low-speed diesel engines. The dimensions of the diesel-reduced unit practically do not differ from the dimensions of the installation with a low-speed diesel engine. However, the latter is twice as high.
The low height of medium-speed diesel engines allows them to be used on ships that carry long loads and which require deck passages for wheeled vehicles (for example, ships with horizontal cargo handling).
Structurally, the main installations with medium-speed diesel engines and mechanical transmissions are one-, two-, three- and four-machine, which are connected to one gearbox. Such SPPs are single-shaft and multi-shaft.
Compared with installations with slow-speed engines, the considered installations have a number of advantages:
The engine room of a vessel with medium-speed diesel engines may have a lower height, and the power plant itself may have less weight and dimensions;
The presence of a gearbox allows the use of engines and the propeller shaft at partial speeds, which corresponds to the highest efficiency of the propeller;
The operational characteristics of the installation are higher due to the fact that when the ship's speed decreases, individual engines can be stopped, and the remaining ones in operation are used more efficiently;
The failure of one of the engines does not lead to a stop of the vessel, and the ability to disable a faulty engine allows you to repair it during the voyage.
It should also be noted the disadvantages of installations with medium-speed engines compared to installations with low-speed ones:
The resource of a medium-speed diesel engine is much lower;
Due to the energy costs in the gearbox and couplings, the mechanical efficiency is less;
Operation is more difficult due to the large number of diesel cylinders;
These installations have an increased noise level, which makes it necessary to take additional measures for soundproofing, and this leads to an increase in the cost of the installation.
Installations with high-speed diesel engines are used on fishing seiners of the river fleet, port tugs, support vessels, boats, hydrofoils and hovercraft. This class includes engines with a crankshaft speed above 750 rpm. Therefore, a reduction gear for propulsion is used in the power plant. As a rule, mechanical, hydraulic, hydromechanical and electrical transmissions are used.
High-speed diesel engines have smaller weight and size indicators than medium-speed ones, lower cost and high maintainability. However, they are inferior to medium-speed efficiency, resource and require the use of light (diesel) fuel.
High-speed diesel engines are widely used in power transmission installations. This allows the creation of compact power plants, since diesel generators can be placed anywhere on the ship, including platforms and the upper deck. If there are conditions for transferring power to the propeller in such installations, shafting can be dispensed with.
SPPs with medium-speed and high-speed diesel engines differ from each other by a variety of design and layout solutions, which is determined to a greater extent by the type and purpose of the vessels. They more often than in installations with low-speed diesel engines use attached auxiliary mechanisms (electric generators, air compressors, fuel pumps, oil pumps, cooling pumps, drainage pumps, fire fighting pumps), and this simplifies the layout of systems and reduces the load on the ship's power plant. At the same time, hanging mechanisms (in large numbers) can reduce the reliability and maintainability of the installation.
