RU170557U1 - Engine for diesel generator sets - Google Patents

Abstract

The utility model relates to the field of diesel engineering and is intended for use as part of power plants for generating electricity. The engine for diesel generator sets includes a V-shaped block crankcase, cylinder heads, a crank mechanism, a gas distribution mechanism, a cooling system for high and low temperature circuits, an intake system with a charge air cooler, an exhaust system, a fuel supply system, a lubrication system, crankcase ventilation system, electronic control unit. At the same time, a removable single-level frame was introduced on which a charge air cooler is installed, while the frame is configured to supply and discharge to it a cooling fluid of a low-temperature circuit from the cooling system. The technical result consists in simplifying the engine assembly process, reducing the complexity with a simultaneous increase in its maintainability. 6 c.p. f-ly, 3 ill.

Description

The utility model relates to the field of diesel engineering and is intended for use as part of diesel generator sets for generating electricity.

There are various technical solutions in this area.

V-type diesel engine (Japanese application for invention No. 10252493, applicant Yanmar diesel engine CO, publ. 09/22/1998). The engine contains a crankshaft, a fuel injection pump located between the cylinders, and a thermostat compartment. Coolant flows from the cylinder heads to the cold water pipe through a pipe that is connected to the coolant connector in the thermostat compartment. When the temperature drops below a fixed temperature, the coolant returns to the cylinder block.

The closest in technical essence to the claimed technical solution is the V2000Gx5 diesel engine of the German company MTU (see the link to the technical description: https://www.mtu-online.com/fileadmin/fm-dam/mtu-global/technical-info/ operating-instructions / neu_04_04_2016 / MS15019_04E.pdf), including a V-shaped block crankcase, cylinder heads, crank mechanism, gas distribution mechanism, high and low temperature circuit cooling system, intake system with charge air cooler, exhaust system, system fuel supply, lubrication system, ventilation system crankcase, electronic control unit, fan with drive clutch.

However, for all known analogues, the elements and assemblies of the engine systems are installed separately on the hull parts (crankcase, cylinder heads, etc.), which complicates the design of the hull parts and increases the complexity of the engine assembly as a whole. In addition, for engine repair, it is necessary to dismantle each of the elements and units of its systems separately, which affects its maintainability.

The technical problem is the creation of an engine characterized by low labor input and high maintainability.

The technical result provided by the proposed utility model is to simplify the process of assembling the engine, reducing the complexity with a simultaneous increase in its maintainability.

This problem is solved due to the fact that the engine for diesel generator sets, including a V-shaped block crankcase, cylinder heads, crank mechanism, gas distribution mechanism, a cooling system for high and low temperature circuits, an intake system with a charge air cooler , exhaust system, fuel supply system, lubrication system, crankcase ventilation system, electronic control unit, according to the present utility model, a removable single-level frame with cooling rer charge air, wherein the frame is arranged to provide inlet and outlet thereto low temperature cooling water circuit from the cooling system.

In options:

- the frame is mounted on cylinder heads or on a V-shaped crankcase;

- the frame is made of hollow sections hermetically connected to each other or of profiled beams connected to each other and pipes fixed to them;

- the frame is equipped with additional load-bearing elements;

- at least one crankcase gas filter mounted on the frame is inserted;

- introduced at least one air filter mounted on the frame.

Thus, using the claimed combination of essential features, a simplification of the engine assembly process is achieved through the introduction of a removable single-level frame, which provides for the simultaneous installation of a charge air cooler on it and the supply and removal of coolant to it. This leads to the implementation of the principle of large-block assembly and modularity, since the frame with the cooler installed on it is first assembled, and then the frame assembly with the cooler is mounted on the engine, reducing the complexity of the assembly and disassembly process. At the same time, the entire frame assembly with a cooler is dismantled for engine repair, which increases its maintainability.

The essence of the utility model is illustrated by the following figures: in FIG. 1 is a front-left isometric view of an engine for diesel generator sets, FIG. 2 is a rear-right isometric view of a diesel engine, in FIG. 3 is a front-left isometric view of a diesel engine frame.

Accepted designations:

1 - block crankcase,

2 - cylinder head,

3 - charge air cooler,

4 - electronic control unit,

5 - frame

6 - point supports,

7 - flywheel

8 - flywheel housing,

9 - sleeve with a cooling jacket,

10 - node drive valves

11 - fuel injection nozzle,

12 - pump coolant low temperature circuit,

13 - thermostats of the coolant low-temperature circuit,

14 - turbochargers,

15 - exhaust manifolds,

16 - exhaust pipe

17 - fine fuel filters,

18 - oil pan

19 - full-flow oil filters,

20 - oil cooler,

21 - partial flow centrifugal oil filters,

22 - crankcase gas filter,

23 - generator of own needs,

24 - fan with a drive clutch,

25 - electric starters,

26 - feet mounting frame

27 - air filter.

The engine for diesel generator sets includes (Fig. 1, 2) a V-block crankcase 1, a cylinder head 2, a crank mechanism, a gas distribution mechanism, a cooling system for high and low temperature circuits, an intake system with at least one charge air cooler 3, exhaust system, fuel supply system, lubrication system, crankcase ventilation system, electronic control unit 4.

A removable single-level frame 5 is introduced, on which a charge air cooler 3 is installed. In this case, the frame 5 is configured to provide supply and removal to the cooler 3 of the coolant of the low-temperature circuit from the cooling system. The crankcase 1 of the V-shaped design is made with a camber angle of 90 ° and is the main supporting part of the engine with point supports 6 mounted on it, which ensure the engine is mounted to the foundation of the power plant (not shown in the drawing). Inside the crankcase 1, a crank mechanism is installed, consisting of a crankshaft (not shown in the drawing), connecting rods (not shown in the drawing), pistons (not shown in the drawing) and flywheel 7. The crankcase is installed on the rear end of the crankcase 1 8 flywheel 7.

Cylinders are installed on the mounting surfaces of the crankcase 1 (twelve cylinders are used in this embodiment), each of which consists of a sleeve with a cooling jacket 9, a cylinder head 2, a valve assembly 10 of the valve timing, and a fuel injection nozzle 11. A variant is possible (not shown in the drawing) when the cylinder liners are installed in the crankcase 1, and the cylinder heads 2 are installed on its mounting surfaces. Inside the cylinder collapse on the crankcase 1, a fuel accumulator (not shown) of the fuel supply system and a primary oil separator (not shown) of crankcase gases of the crankcase ventilation system can be installed.

The gas distribution mechanism can be located inside the crankcase 1 and the collapse of the cylinders and is designed to control the intake and exhaust valves located in the heads of the 2 cylinders.

The cooling system of the high and low temperature circuits includes a pump (not shown) of a high temperature circuit coolant, a low temperature circuit coolant pump 12, thermostats (not shown) of a high temperature circuit coolant, low temperature coolant thermostats 13.

The exhaust system may include turbocompressors 14, exhaust manifolds 15, exhaust pipe 16.

The fuel supply system contains fine fuel filters 17, a high pressure fuel pump (not shown) and may contain coarse fuel filters (not shown).

The lubrication system contains an oil pan 18, an oil pump (not shown in the drawing), full-flow oil filters 19 and may contain an oil cooler 20, a differential oil valve (not shown in the drawing), thermostats (not shown) of the oil, partially flow centrifugal filters 21 oils.

The oil pan 18, made of sheet metal by welding, is a tank for storing lubricating oil, on the inner surface of which partitions are made (not shown in the drawing), which reduce the amplitude of oil movement with variable rolls and trim. An oil pump (not shown) with an oil intake pipe is installed inside the oil pan 18 on the lower surface of the crankcase 1.

The crankcase ventilation system may further comprise at least one crankcase gas filter 22 mounted on the frame 5.

The engine may also contain an auxiliary generator 23, a fan 24 with a drive clutch, electric starters 25.

The removable frame 5 can be collapsibly fixed (not shown in the drawing) on the V-shaped block-crankcase 1 or on the heads of 2 cylinders using paws 26 and fasteners (not shown in the drawing).

The electronic control unit 4 of the engine control monitors the fuel supply processes, and also monitors the main indicators of the engine systems with the issuance of warning signals about the malfunction. The electronic control unit 4 can be installed anywhere in the frame 5 or on other elements of the engine.

Frame 5 (Fig. 3) is a single-level spatial structure of a frame type made of profiled beams connected to each other (not shown in the drawing) and pipes fixed to them (not shown in the drawing) and / or from hollow hermetically connected to each other profiles (square and / or round sections). The frame 5 can be equipped with additional load-bearing elements, which are brackets, stiffeners, slopes, connectors, and made in the form of beams, hollow profiles, etc., designed to install various elements and assemblies of engine systems on the frame 5.

Functionally, the frame 5 serves to install a charge air cooler 3, as well as supply and discharge of a low-temperature circuit coolant to it. The coolant of the low-temperature circuit enters the frame 5 from thermostats 13. Then, the coolant through the frame 5 enters the charge air cooler 3. From the charge air cooler 3, the coolant flows through the frame 5 to the thermostats 13.

From the additionally introduced load-bearing elements of the frame 5, another functional level can be formed, which ensures the installation of air filters 27, crankcase filters 23, and an electronic control unit 4 on it.

The inventive engine in the variant with a single-stage boost works as follows.

The combustion air enters the compressor part of the turbochargers 14, from where it enters the charge air cooler 3, from where it enters the intake manifolds (not shown in the drawing) and then to the cylinders. The exhaust gases from the cylinders through the exhaust manifolds 15 enter the turbine part of the turbochargers 14 and through the exhaust pipe 16 is released into the atmosphere.

Coolant for taking heat from the air for combustion in coolers 3 is supplied through the frame 5.

Thus, by introducing into the engine a removable frame 5, which provides the installation of elements and units of the systems, supply, discharge of coolant to them and circulation of coolant of the low-temperature circuit, simplification of installation of elements and units of the engine systems is achieved by reducing the number of pipelines and connectors of the cooling system . Thus, thanks to the proposed utility model, manufacturability is ensured by simplifying the installation of elements and assemblies of engine systems while improving the maintainability of a diesel engine.

The claimed utility model has been tested as a prototype diesel engine, which is manufactured and used in an industrial environment, namely as part of power plants for generating electricity, which allows us to consider the claimed utility model to meet the patentability criterion of "industrial applicability".

Claims (7)

1. An engine for diesel generator sets, including a V-shaped block crankcase, cylinder heads, crank mechanism, a gas distribution mechanism, a cooling system for high and low temperature circuits, an intake system with a charge air cooler, an exhaust system, a fuel supply system, lubrication system, crankcase ventilation system, electronic control unit, characterized in that a removable single-level frame is introduced, on which a charge air cooler is installed, while the frame is made with possible the ability to supply and discharge to it the cooling fluid of the low-temperature circuit from the cooling system. 2. The engine for diesel generator sets according to claim 1, characterized in that the frame is mounted on cylinder heads or on a V-shaped crankcase. 3. The engine for diesel generator sets according to claim 1, characterized in that the frame is made of hollow sections hermetically connected to each other. 4. The engine for diesel generator sets according to claim 1, characterized in that the frame is made of profiled beams connected to each other and pipes fixed to them. 5. The engine for diesel generator sets according to claim 1, characterized in that the frame is equipped with additional load-bearing elements. 6. An engine for diesel generator sets according to claim 1, characterized in that at least one crankcase gas filter is mounted on the frame. 7. An engine for diesel generator sets according to claim 1, characterized in that at least one air filter mounted on the frame is introduced.

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