CN109915231A - Spark ignition type engine with supercharger closed crankcase ventilation system - Google Patents
Spark ignition type engine with supercharger closed crankcase ventilation system Download PDFInfo
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- CN109915231A CN109915231A CN201910284669.0A CN201910284669A CN109915231A CN 109915231 A CN109915231 A CN 109915231A CN 201910284669 A CN201910284669 A CN 201910284669A CN 109915231 A CN109915231 A CN 109915231A
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- oil separator
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Abstract
The invention discloses a kind of spark ignition type engine with supercharger closed crankcase ventilation systems.The spark ignition type engine with supercharger closed crankcase ventilation system includes: cylinder cover of engine；Gas drive gs-oil separator；Booster compressed-air system comprising: the rear pipe of air filter, compressor, intercooler and one way stop peturn valve, the air filter is connected to by the second pipeline with gas drive gs-oil separator；The inlet tube of the compressor is connected to air filter；The intercooler is connected to by third pipeline with displacement of reservoir oil gas separating device；And air compressor compressed-air system comprising: air compressor, gas tank and pressure regulator valve, the air compressor are connected to by the 4th pipeline with the inlet end of gas tank, and the outlet side of the gas tank is connected to by the 5th pipeline with gas drive gs-oil separator.The spark ignition type engine with supercharger closed crankcase ventilation system can guarantee gs-oil separator separative efficiency with higher, to improve supercharger air compressor reliability.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of spark ignition type engine with supercharger closed crankcase ventage
System.
Background technique
The noxious emission of engine is a main source for causing atmosphere pollution, important with environmental protection problem
Property increase increasingly, reduce this target of engine noxious emission become the world today on development of engine an important directions.
Simultaneously with six regulation of GB17691-2018 state publication, in order to meet in six regulation GB17691-2018C.5.11.2 of state for
Spark-ignition engine crankcase pressure is not more than the requirement of atmospheric pressure, and a kind of completely new closed crankcase ventilation system is needed
Meet regulation demand.
The closed crankcase ventilation system of gas drive gs-oil separator is currently based on as shown in Figure 1, the operation of engine 11 generates
Crank case gases pass through cylinder cover of engine 12 pneumostome, enter gas drive gs-oil separator 13 through pipe A, by Oil-gas Separation
Gas machine after device separation is managed after pipe B enters air filter 14, hence into the inlet tube to the compressor 15 after air filter,
To form closed crankcase ventilation system.The booster gas after cooling taken after intercooler 16, before air throttle 17 is by pipe C
Gas drive gs-oil separator 13 is entered, to drive separator work, realizes high separative efficiency.But gas drive gs-oil separator
13 keep efficient separative efficiency and (crankcase) realization negative pressure in cylinder cover of engine 12, it is desirable that are introduced by pipe C
Gas is greater than setting pressure (generally higher than 1.5bar).
But pressure of the real engine behind the region that idling or booster do not work, intercooler is atmospheric pressure,
Gas drive gs-oil separator can not be driven, guarantee efficient separative efficiency.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and reasonable spark ignition type engine with supercharger closed crankcase ventilations
System, the spark ignition type engine with supercharger closed crankcase ventilation system can guarantee oil gas point in engine full working scope region
From device separative efficiency with higher, so that it is guaranteed that the gas oil content after gs-oil separator separates is low, to improve pressurization
Device compressor reliability.
To achieve the above object, the present invention provides a kind of spark ignition type engine with supercharger closed crankcase ventilation system, packets
It includes: cylinder cover of engine；Gas drive gs-oil separator is connected to by the first pipeline with the cylinder cover of engine；Booster pressure
Gas system comprising: the rear pipe of air filter, compressor, intercooler and one way stop peturn valve, the air filter passes through the second pipeline and gas drive
Gs-oil separator connection；The inlet tube of the compressor is connected to air filter；The intercooler passes through third pipeline and displacement of reservoir oil gas point
It is connected to from device, the one way stop peturn valve is laid on third pipeline；The crank case gases that engine operation generates pass through engine
The pneumostome of cylinder head cover enters gas drive gs-oil separator through the first pipeline, and the gas machine after gs-oil separator separates passes through
Second pipeline enters the rear pipe of air filter, hence into the inlet tube to the compressor after air filter, to form closed crankcase
Ventilating system, the booster gas after cooling taken after intercooler, before air throttle enter gas drive oil gas point by third pipeline
From device, to drive separator work；And air compressor compressed-air system comprising: air compressor, gas tank and pressure regulation
Valve, the air compressor are connected to by the 4th pipeline with the inlet end of gas tank, and the outlet side of the gas tank passes through the 5th pipeline
It is connected to gas drive gs-oil separator.
In a preferred embodiment, one end of third pipeline is connected between intercooler and air throttle.
In a preferred embodiment, one end connection of the 5th pipeline gas drive gs-oil separator and one way stop peturn valve it
Between.
In a preferred embodiment, pressure regulator valve is laid in the upstream or downstream of gas tank.
In a preferred embodiment, pressure regulator valve is mechanical pressure regulator valve or automatically controlled pressure regulator valve.
Compared with prior art, spark ignition type engine with supercharger closed crankcase ventilation system according to the present invention has as follows
The utility model has the advantages that compressed air and increasing that the spark ignition type engine with supercharger closed crankcase ventilation system takes air compressor to compress
The common driving method of pressure pressure can guarantee gs-oil separator separation effect with higher in engine full working scope region
Rate avoids list using air compressor machine driving method, causes air compressor load big, and wasted work is more, and complete machine is less economical, so that it is guaranteed that
Gas oil content after gs-oil separator separates is low, so that supercharger air compressor reliability is improved, it is effective to meet
Demand of the GB17691-2018 regulation about spark-ignition engine crankcase pressure.
Detailed description of the invention
Fig. 1 is the positive structure schematic of existing spark ignition type engine with supercharger closed crankcase ventilation system.
Fig. 2 is the back side of the spark ignition type engine with supercharger closed crankcase ventilation system of first embodiment according to the present invention
Structural schematic diagram.
Fig. 3 is the assembly of the spark ignition type engine with supercharger closed crankcase ventilation system of second embodiment according to the present invention
Structural schematic diagram.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figures 2 and 3, spark ignition type engine with supercharger closed crankcase ventage according to the preferred embodiment of the invention
The specific structure of system includes: cylinder cover of engine 21, gas drive gs-oil separator 22, and the booster compressed-air system being arranged in parallel
With air compressor compressed-air system, boost pressure is greater than gas drive gs-oil separator demand after the intercooler of booster compressed-air system
When setting pressure, and being greater than the pressure of air compressor compressed-air system output, before the operation of closed cycle ventilating system is with improving
Scheme；Pressure is equal to atmospheric pressure or lower than gas drive gs-oil separator demand setting pressure after the intercooler of booster compressed-air system
When power, the compressed gas after the pressure regulation pressure regulating valve of air compressor compressed-air system is entered in gas drive gs-oil separator,
Gs-oil separator work is driven, allows the spark ignition type engine with supercharger closed crankcase ventilation system in engine full working scope
Region can guarantee gs-oil separator separative efficiency with higher, so that it is guaranteed that the gas oil-containing after gs-oil separator separates
Measure it is low, to improve supercharger air compressor reliability.
Specifically, the lid of cylinder cover of engine 21 is located on engine 23, and gas drive gs-oil separator 22 passes through the first pipeline
24 are connected to cylinder cover of engine 21.
Booster compressed-air system includes: air filter 25, compressor 26, intercooler 27 and one way stop peturn valve 28, wherein air filter 25
Rear pipe be connected to gas drive gs-oil separator 22 by the second pipeline 29.The inlet tube of compressor 26 is connected to air filter 25.In it is cold
Device 27 is connected to by third pipeline 30 with displacement of reservoir oil gas separating device 22, and one way stop peturn valve 28 is laid on third pipeline 30.Engine
The crank case gases that operation generates pass through the pneumostome of cylinder cover of engine, enter gas drive gs-oil separator through the first pipeline 24,
Gas machine after gs-oil separator separates is managed after the second pipeline 29 enters air filter, hence into after air filter
The inlet tube of compressor, to form closed crankcase ventilation system.What is taken after intercooler 27, before air throttle 36 is after cooling
Booster gas enters gas drive gs-oil separator 22 by third pipeline 30, to drive separator work.
Preferably, one end of third pipeline 30 is connected between intercooler 27 and air throttle 36.
Air compressor compressed-air system includes: air compressor 31, gas tank 32 and pressure regulator valve 33, wherein air compressor
31 is included for engine, and the inlet end of gas tank 32 is connected to by the 4th pipeline 34 with air compressor 31, the outlet side of gas tank 32
It is connected to by the 5th pipeline 35 with gas drive gs-oil separator 22.
Preferably, one end of the 5th pipeline 35 is connected between gas drive gs-oil separator 22 and one way stop peturn valve 28.
Preferably, pressure regulator valve 33 is laid in the upstream or downstream of gas tank 32.
Pressure is set according to gas drive gs-oil separator demand, sets pressure regulator valve, so that the 5th pipeline 35 of pressure regulator valve downstream
Pressure is higher than the required pressure of gas drive gs-oil separator.Boost pressure is greater than gas drive gs-oil separator demand and sets after intercooler
Constant-pressure, and be greater than the 5th pipeline 35 output pressure when, closed cycle ventilating system operation with improve front case；It is cold in the middle
When pressure is equal to atmospheric pressure or sets pressure lower than gas drive gs-oil separator demand after device, the pressure after pressure regulation pressure regulating valve
Contracting gas flows through the 5th pipeline 35 and enters in gas drive gs-oil separator, driving gs-oil separator work, while one way stop peturn valve
It closes, is avoided since gas enters intercooler to the pipe between air throttle in the 5th pipeline 35 since pressure acts on, thus into
Enter engine, cause the load of air compressor too big, influences the foundation of vehicle braking system gas tank pressure, influence the system of vehicle
It is dynamic.
Preferably, pressure regulator valve is mechanical pressure regulator valve or automatically controlled pressure regulator valve.
To sum up, which can protect in engine full working scope region
Gs-oil separator separative efficiency with higher is demonstrate,proved, so that it is guaranteed that the gas oil content after gs-oil separator separates is low, thus
Improve supercharger air compressor reliability.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (5)
1. a kind of spark ignition type engine with supercharger closed crankcase ventilation system characterized by comprising
Cylinder cover of engine；
Gas drive gs-oil separator is connected to by the first pipeline with the cylinder cover of engine；
Booster compressed-air system comprising: air filter, compressor, intercooler and one way stop peturn valve, the rear pipe of the air filter pass through the
Two pipelines are connected to gas drive gs-oil separator；The inlet tube of the compressor is connected to air filter；The intercooler passes through third pipe
Road is connected to displacement of reservoir oil gas separating device, and the one way stop peturn valve is laid on third pipeline；The crankcase gas that engine operation generates
Body passes through the pneumostome of cylinder cover of engine, enters gas drive gs-oil separator through the first pipeline, after gs-oil separator separates
Gas machine managed after the second pipeline enters air filter, hence into the inlet tube to the compressor after air filter, thus shape
At closed crankcase ventilation system, the booster gas after cooling taken after intercooler, before air throttle is entered by third pipeline
To gas drive gs-oil separator, to drive separator work；And
Air compressor compressed-air system comprising: air compressor, gas tank and pressure regulator valve, the air compressor pass through the 4th
Pipeline is connected to the inlet end of gas tank, and the outlet side of the gas tank is connected to by the 5th pipeline with gas drive gs-oil separator.
2. spark ignition type engine with supercharger closed crankcase ventilation system as described in claim 1, which is characterized in that the third
One end of pipeline is connected between intercooler and air throttle.
3. spark ignition type engine with supercharger closed crankcase ventilation system as claimed in claim 2, which is characterized in that the described 5th
One end of pipeline is connected between gas drive gs-oil separator and one way stop peturn valve.
4. spark ignition type engine with supercharger closed crankcase ventilation system as described in claim 1, which is characterized in that the pressure regulation
Valve is laid in the upstream or downstream of gas tank.
5. spark ignition type engine with supercharger closed crankcase ventilation system as described in claim 1, which is characterized in that the pressure regulation
Valve is mechanical pressure regulator valve or automatically controlled pressure regulator valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284669.0A CN109915231B (en) | 2019-04-10 | 2019-04-10 | Closed crankcase ventilation system of spark-ignition supercharged engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284669.0A CN109915231B (en) | 2019-04-10 | 2019-04-10 | Closed crankcase ventilation system of spark-ignition supercharged engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109915231A true CN109915231A (en) | 2019-06-21 |
| CN109915231B CN109915231B (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910284669.0A Active CN109915231B (en) | 2019-04-10 | 2019-04-10 | Closed crankcase ventilation system of spark-ignition supercharged engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520212A (en) * | 2020-04-30 | 2020-08-11 | 广西玉柴机器股份有限公司 | Method for preventing water vapor of crankcase ventilation system from condensing |
| CN114033588A (en) * | 2021-11-02 | 2022-02-11 | 潍坊科技学院 | Compressor integrated heat exchange device of supercharger for respirator closed cycle engine |
| CN114704350A (en) * | 2022-04-15 | 2022-07-05 | 潍柴动力股份有限公司 | Dual-fuel engine crankcase ventilation system and vehicle |
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| CN101730787A (en) * | 2007-07-26 | 2010-06-09 | 康明斯滤清系统股份有限公司 | The crankcase ventilation system that has pumped scavenged oil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520212A (en) * | 2020-04-30 | 2020-08-11 | 广西玉柴机器股份有限公司 | Method for preventing water vapor of crankcase ventilation system from condensing |
| CN114033588A (en) * | 2021-11-02 | 2022-02-11 | 潍坊科技学院 | Compressor integrated heat exchange device of supercharger for respirator closed cycle engine |
| CN114033588B (en) * | 2021-11-02 | 2023-02-28 | 潍坊科技学院 | Compressor integrated heat exchange device of supercharger for respirator closed cycle engine |
| CN114704350A (en) * | 2022-04-15 | 2022-07-05 | 潍柴动力股份有限公司 | Dual-fuel engine crankcase ventilation system and vehicle |
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| Publication number | Publication date |
|---|---|
| CN109915231B (en) | 2020-11-10 |
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