CN105041457A - Novel gasoline engine based on layered EGR and power regulating method of novel gasoline engine - Google Patents
Novel gasoline engine based on layered EGR and power regulating method of novel gasoline engine Download PDFInfo
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- CN105041457A CN105041457A CN201510429104.9A CN201510429104A CN105041457A CN 105041457 A CN105041457 A CN 105041457A CN 201510429104 A CN201510429104 A CN 201510429104A CN 105041457 A CN105041457 A CN 105041457A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses a novel gasoline engine based on layered EGR and a power regulating method of the novel gasoline engine. A gas inlet bypass pipeline and an exhaust bypass pipeline of the gasoline engine are correspondingly connected to the two ends of a gas compressor respectively and the two ends of a waste gas turbine respectively. The gas inlet bypass pipeline is provide with a gas inlet bypass valve and a gas inlet bypass valve control motor, and the exhaust bypass pipeline is provided with an exhaust bypass valve and anexhaust bypass valve control motor. One end of an EGR pipeline is connected with the part, on the inlet side of the waste gas turbine, of the exhaust pipeline, and the other end of the EGR pipeline is sealed. A first EGR gas inlet pipeline and a second EGR gas inlet pipeline are symmetrically arranged about the gas inlet pipeline, one end of the first EGR gas inlet pipeline and one end of the second EGR gas inlet pipeline are inserted in the gas inlet pipeline to be communicated with an air cylinder, and the other end of the first EGR gas inlet pipeline and the other end of the second EGR gas inlet pipeline are connected with the EGR pipeline. The first EGR gas inlet pipeline and the second EGR gas inlet pipeline are provided with power regulating valves, switch valves, power regulating valve control motors and electromagnetic relays. According to the regulating method, work of all the valves is controlled according to the proportion of the average effective pressure in the cylinder at present and the maximum average effective pressure in the cylinder. According to the novel gasoline engine based on layered EGR and the power regulating method of the novel gasoline engine, a restrictor is omitted, the surging phenomenon of the gas compressor is avoided, the combustion temperature is lowered, and the service life of workpieces is prolonged.
Description
Technical field
The present invention relates to petrol engine field, particularly relate to a kind of new-typed gasoline engine based on layering EGR and power regulating method thereof.
Background technique
At present, known petrol engine power adjustments mainly relies on closure to realize.By detecting the angle that gas pedal is stepped on, produce two groups of voltage signals, through ECU, calculation process is carried out to the data information that this information and other system transmit, thus the control signal of generation is delivered to servomotor driving by circuit, drive throttle execution mechanism, thus control the travelling speed of vehicle.The sensor that existing accelerator pedal of automobile uses all adopts carbon film contact type structure, slides to change resistance by contact on carbon film, and of long duration exist the potential safety hazard such as wearing and tearing, bad connection, not return.And in low speed Smaller load situation, closure throttling loss is comparatively large, improves oil consumption loss.
Summary of the invention
Technical problem to be solved by this invention is for defect involved in background technique, provides a kind of new-typed gasoline engine based on layering EGR and power regulating method thereof.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
Based on the new-typed gasoline engine of layering EGR, comprise admission line, exhaust duct, gas compressor, exhaust gas turbine, air inlet by-pass line, exhaust bypass pipeline, EGR pipe road, EGR first admission line and EGR second admission line;
Described gas compressor is arranged in admission line, and exhaust gas turbine is arranged in exhaust duct, and described gas compressor and exhaust gas turbine are coaxially arranged;
Described air inlet by-pass line one end is connected with the import of gas compressor, and the other end is connected with the outlet of gas compressor;
Described exhaust bypass pipeline one end is connected with the import of exhaust gas turbine, and the other end is connected with the outlet of exhaust gas turbine;
Described air inlet by-pass line is provided with air inlet bypass valve and air inlet bypass valve control motor, and described air inlet bypass valve control motor is for controlling the switch of air inlet bypass valve and then controlling circulation and the partition of described air inlet by-pass line;
Described exhaust bypass pipeline is provided with exhaust by-pass valve and exhaust bypass valve control motor, and described exhaust bypass valve control motor is for controlling the switch of exhaust by-pass valve and then controlling circulation and the partition of described exhaust bypass pipeline;
The outlet of described admission line and the entrance of exhaust duct are all in the cylinder of petrol engine;
One end, described EGR pipe road is connected with the exhaust duct of exhaust gas turbine suction side, and the other end is airtight;
Described EGR first admission line, EGR second admission line are arranged symmetrically with relative to admission line, and one end is all inserted into feed channel and communicates with cylinder, and the other end is all connected with EGR pipe road;
Described EGR first admission line, EGR second admission line are equipped with power adjustments valve, switch valve, power adjustments valve control motor and electromagnetic relay, wherein, power adjustments valve control motor is for controlling the state of power adjustments valve, and electromagnetic relay is used for the switch of control switch valve.
As the further optimized project of the new-typed gasoline engine that the present invention is based on layering EGR, described admission line bifurcated in gasoline engine cylinder is the first outlet conduit and the second outlet conduit, described EGR first admission line inserts the first outlet conduit and cylinder communicates, and described EGR second admission line inserts the second outlet conduit and cylinder communicates.
As the further optimized project of the new-typed gasoline engine that the present invention is based on layering EGR, described exhaust duct bifurcated in gasoline engine cylinder is the first inlet pipe and the second inlet pipe.
As the further optimized project of the new-typed gasoline engine that the present invention is based on layering EGR, the high-energy sparking plug of petrol engine is positioned at cylinder axis, and admission line and exhaust duct are symmetrical arranged about cylinder axis.
The invention also discloses a kind of power regulating method of the new-typed gasoline engine based on layering EGR, comprise following steps:
Step 1), under petrol engine external characteristics, measures maximum mean effective pressure in cylinder, is designated as BMEPmax;
Step 2), obtain the scale in mean effective pressure BMEP and cylinder between maximum mean effective pressure BMEPmax in current cylinder;
Step 2.1), if BMEP is more than or equal to 20%BMEPmax and be less than or equal to 60%BMEPmax, open the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.2), if BMEP is greater than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.3), if BMEP is less than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, open air inlet bypass valve and exhaust by-pass valve.
The present invention cancels petrol engine closure, adopts in-cylinder direct injection to add exhaust gas turbine increase technology, according to different operating mode, relies on the adjustment into exhausted air quantity and fuel injection quantity, realize petrol engine power adjustable.
The present invention adopts above technological scheme compared with prior art, has following technique effect:
1. eliminating closure, can power adjustable be realized when eliminating throttle valve loss;
2., relative to traditional E GR, there are higher fuel economy and power character;
3. avoid the surging phenomenon of gas compressor;
4. reduce combustion temperature, reduce the discharge of the harmful substances such as NOx; Reduce heat load and heat distortion amount, extend the working life of workpiece.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of new-typed gasoline engine based on layering EGR of the present invention;
Fig. 2 is the schematic flow sheet based on the power regulating method of the new-typed gasoline engine of layering EGR in the present invention.
In figure, 1-air inlet bypass valve, 2-air inlet bypass valve control motor, 3-power adjustments valve control motor, 4-power adjustments valve, 5-EGR first admission line, 6-switch valve, 7-electromagnetic relay, 8-oil nozzle, 9-high-energy sparking plug, 10-exhaust bypass valve control motor, 11-exhaust by-pass valve, 12-exhaust duct, 13-exhaust gas turbine, 14-EGR pipeline, 15-EGR second admission line, 16-gas compressor, 17-admission line, 18-air inlet by-pass line, 19-exhaust bypass pipeline.
Embodiment
Below in conjunction with accompanying drawing, technological scheme of the present invention is described in further detail:
As shown in Figure 1, the invention discloses a kind of new-typed gasoline engine based on layering EGR, comprise admission line, exhaust duct, gas compressor, exhaust gas turbine, air inlet by-pass line, exhaust bypass pipeline, EGR pipe road, EGR first admission line and EGR second admission line;
Described gas compressor is arranged in admission line, and exhaust gas turbine is arranged in exhaust duct, and described gas compressor and exhaust gas turbine are coaxially arranged;
Described air inlet by-pass line one end is connected with the import of gas compressor, and the other end is connected with the outlet of gas compressor;
Described exhaust bypass pipeline one end is connected with the import of exhaust gas turbine, and the other end is connected with the outlet of exhaust gas turbine;
Described air inlet by-pass line is provided with air inlet bypass valve and air inlet bypass valve control motor, and described air inlet bypass valve control motor is for controlling the switch of air inlet bypass valve and then controlling circulation and the partition of described air inlet by-pass line;
Described exhaust bypass pipeline is provided with exhaust by-pass valve and exhaust bypass valve control motor, and described exhaust bypass valve control motor is for controlling the switch of exhaust by-pass valve and then controlling circulation and the partition of described exhaust bypass pipeline;
The outlet of described admission line and the entrance of exhaust duct are all in the cylinder of petrol engine;
One end, described EGR pipe road is connected with the exhaust duct of exhaust gas turbine suction side, and the other end is airtight;
Described EGR first admission line, EGR second admission line are arranged symmetrically with relative to admission line, and one end is all inserted into feed channel and communicates with cylinder, and the other end is all connected with EGR pipe road;
Described EGR first admission line, EGR second admission line are equipped with power adjustments valve, switch valve, power adjustments valve control motor and electromagnetic relay, wherein, power adjustments valve control motor is for controlling the state of power adjustments valve, and electromagnetic relay is used for the switch of control switch valve.
Described admission line bifurcated in gasoline engine cylinder is the first outlet conduit and the second outlet conduit, and described EGR first admission line inserts the first outlet conduit and cylinder communicates, and described EGR second admission line inserts the second outlet conduit and cylinder communicates.
Described exhaust duct bifurcated in gasoline engine cylinder is the first inlet pipe and the second inlet pipe.
The high-energy sparking plug of petrol engine is positioned at cylinder axis, and admission line and exhaust duct are symmetrical arranged about cylinder axis.
This petrol engine adopts in-cylinder direct injection to add exhaust gas turbine increase technology.Under different operating mode, rely on the adjustment into exhausted air quantity and fuel injection quantity, realize petrol engine power adjustments.Based on the tumble motion of gas, realize the layering of waste gas and incoming mixture, carried out the adjustment of power by the ratio changing incoming mixture and waste gas in cylinder.Under idling Smaller load state, for avoiding exhaust gas dilution phenomenon, avoiding stopping working, now not carrying out EGR, switch valve cuts out, and air inlet bypass valve exhaust by-pass valve is opened, and adopts fuel injection quantity regulating method.And under full load state, for ensureing power character, not carrying out EGR yet, switch valve cuts out, and air inlet bypass valve exhaust by-pass valve cuts out, and adopts fuel injection quantity regulating method.
The number of fuel injection quantity changes the concentration of mixed gas, thus regulating power, carry out secondary fuel injection, fuel injection quantity is calculated by ECU by this operating mode and obtains.
By controlling the quantity of how many change incoming mixtures of exhausted air quantity, thus realize power adjustable.Enter exhausted air quantity to be controlled by the aperture size of power adjustments valve.The press belt movable valve plug action that magnetic attraction overcomes spring is produced after the energising of switch valve electromagnetic coil, thus can the opening and closing of control switch valve rapidly and accurately, can circulate by instantaneous cut-off waste gas, thus ensure, in the non-intake stroke of low speed Smaller load, full load and cylinder, not carry out EGR.
As shown in Figure 2, the invention also discloses a kind of power regulating method of the new-typed gasoline engine based on layering EGR, comprise following steps:
Step 1), under petrol engine external characteristics, measures maximum mean effective pressure in cylinder, is designated as BMEPmax;
Step 2), obtain the scale in mean effective pressure BMEP and cylinder between maximum mean effective pressure BMEPmax in current cylinder;
Step 2.1), if BMEP is more than or equal to 20%BMEPmax and be less than or equal to 60%BMEPmax, open the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.2), if BMEP is greater than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.3), if BMEP is less than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, open air inlet bypass valve and exhaust by-pass valve.
Those skilled in the art of the present technique are understandable that, unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Above-described embodiment; object of the present invention, technological scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. based on the new-typed gasoline engine of layering EGR, it is characterized in that, comprise admission line, exhaust duct, gas compressor, exhaust gas turbine, air inlet by-pass line, exhaust bypass pipeline, EGR pipe road, EGR first admission line and EGR second admission line;
Described gas compressor is arranged in admission line, and exhaust gas turbine is arranged in exhaust duct, and described gas compressor and exhaust gas turbine are coaxially arranged;
Described air inlet by-pass line one end is connected with the import of gas compressor, and the other end is connected with the outlet of gas compressor;
Described exhaust bypass pipeline one end is connected with the import of exhaust gas turbine, and the other end is connected with the outlet of exhaust gas turbine;
Described air inlet by-pass line is provided with air inlet bypass valve and air inlet bypass valve control motor, and described air inlet bypass valve control motor is for controlling the switch of air inlet bypass valve and then controlling circulation and the partition of described air inlet by-pass line;
Described exhaust bypass pipeline is provided with exhaust by-pass valve and exhaust bypass valve control motor, and described exhaust bypass valve control motor is for controlling the switch of exhaust by-pass valve and then controlling circulation and the partition of described exhaust bypass pipeline;
The outlet of described admission line and the entrance of exhaust duct are all in the cylinder of petrol engine;
One end, described EGR pipe road is connected with the exhaust duct of exhaust gas turbine suction side, and the other end is airtight;
Described EGR first admission line, EGR second admission line are arranged symmetrically with relative to admission line, and one end is all inserted into feed channel and communicates with cylinder, and the other end is all connected with EGR pipe road;
Described EGR first admission line, EGR second admission line are equipped with power adjustments valve, switch valve, power adjustments valve control motor and electromagnetic relay, wherein, power adjustments valve control motor is for controlling the state of power adjustments valve, and electromagnetic relay is used for the switch of control switch valve.
2. the new-typed gasoline engine based on layering EGR according to claim 1, it is characterized in that, described admission line bifurcated in gasoline engine cylinder is the first outlet conduit and the second outlet conduit, described EGR first admission line inserts the first outlet conduit and cylinder communicates, and described EGR second admission line inserts the second outlet conduit and cylinder communicates.
3. the new-typed gasoline engine based on layering EGR according to claim 2, is characterized in that, described exhaust duct bifurcated in gasoline engine cylinder is the first inlet pipe and the second inlet pipe.
4. the new-typed gasoline engine based on layering EGR according to claim 3, is characterized in that, the high-energy sparking plug of petrol engine is positioned at cylinder axis, and admission line and exhaust duct are symmetrical arranged about cylinder axis.
5., based on the power regulating method of the new-typed gasoline engine based on layering EGR according to claim 1, it is characterized in that, comprise following steps:
Step 1), under petrol engine external characteristics, measures maximum mean effective pressure in cylinder, is designated as BMEPmax;
Step 2), obtain the scale in mean effective pressure BMEP and cylinder between maximum mean effective pressure BMEPmax in current cylinder;
Step 2.1), if BMEP is more than or equal to 20%BMEPmax and be less than or equal to 60%BMEPmax, open the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.2), if BMEP is greater than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, close air inlet bypass valve and exhaust by-pass valve;
Step 2.3), if BMEP is less than 60%BMEPmax, close the power valve modulating valve on EGR first admission line, EGR second admission line and switch valve, open air inlet bypass valve and exhaust by-pass valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510429104.9A CN105041457A (en) | 2015-07-21 | 2015-07-21 | Novel gasoline engine based on layered EGR and power regulating method of novel gasoline engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510429104.9A CN105041457A (en) | 2015-07-21 | 2015-07-21 | Novel gasoline engine based on layered EGR and power regulating method of novel gasoline engine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420159A2 (en) * | 2002-11-15 | 2004-05-19 | Isuzu Motors Limited | EGR system for internal combustion engine provided with a turbo-charger |
| CN1664342A (en) * | 2005-03-18 | 2005-09-07 | 上海绍博车辆动力装置科技有限公司 | Engine electric control EGR system for vehicle |
| CN102207038A (en) * | 2010-03-31 | 2011-10-05 | 马自达汽车株式会社 | Control apparatus for turbocharged diesel engine |
| CN103184947A (en) * | 2011-12-28 | 2013-07-03 | 马自达汽车株式会社 | Control device and control method of diesel engine |
| CN103670815A (en) * | 2013-12-20 | 2014-03-26 | 吉林大学 | Gasoline engine EGR stratified charge system based on flow guiding plate |
| CN204827651U (en) * | 2015-07-21 | 2015-12-02 | 南京航空航天大学 | Novel gasoline engine based on layering EGR |
-
2015
- 2015-07-21 CN CN201510429104.9A patent/CN105041457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1420159A2 (en) * | 2002-11-15 | 2004-05-19 | Isuzu Motors Limited | EGR system for internal combustion engine provided with a turbo-charger |
| CN1664342A (en) * | 2005-03-18 | 2005-09-07 | 上海绍博车辆动力装置科技有限公司 | Engine electric control EGR system for vehicle |
| CN102207038A (en) * | 2010-03-31 | 2011-10-05 | 马自达汽车株式会社 | Control apparatus for turbocharged diesel engine |
| CN103184947A (en) * | 2011-12-28 | 2013-07-03 | 马自达汽车株式会社 | Control device and control method of diesel engine |
| CN103670815A (en) * | 2013-12-20 | 2014-03-26 | 吉林大学 | Gasoline engine EGR stratified charge system based on flow guiding plate |
| CN204827651U (en) * | 2015-07-21 | 2015-12-02 | 南京航空航天大学 | Novel gasoline engine based on layering EGR |
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