CN203463217U - Cold-starting system of gasoline-premixed and diesel-ignited engine - Google Patents
Cold-starting system of gasoline-premixed and diesel-ignited engine Download PDFInfo
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- CN203463217U CN203463217U CN201320533390.XU CN201320533390U CN203463217U CN 203463217 U CN203463217 U CN 203463217U CN 201320533390 U CN201320533390 U CN 201320533390U CN 203463217 U CN203463217 U CN 203463217U
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Abstract
The utility model relates to a cold-starting system of a gasoline-premixed and diesel-ignited engine, which is used for solving problems, such as the warming-up, higher rotating speed under idling condition and large circulation fluctuation, of the existing gasoline-premixed and diesel-ignited engine, so as to realize the fast and stable cold starting of the gasoline-premixed and diesel-ignited engine. The cold-starting system comprises an engine body, a gasoline supply mechanism and a diesel supply mechanism, and is characterized in that spark plugs of which the number fits with that of engine cylinders are arranged on an engine cylinder cover. According to the cold-starting system, the gasoline-premixed and diesel-ignited engine adopts a novel combustion mode including two combustion forms of compression ignition and ignition in cold starting, warming-up and idling conditions, the control strategy of the engine can be simplified, the development cost can be lowered, and the energy-saving and emission-reduction targets can be favorably realized.
Description
Technical field
The utility model relates to a kind of gasoline premix, diesel oil ignited motor, and the cold-start system of especially a kind of gasoline premix, diesel oil ignited motor, belongs to combustion engine technical field.
Background technique
Along with the raising of automobile making level, people focus on economic performance and the exhaust index of automobile more.For overcoming the drawback that petrol engine fuel consumption rate is high, emission performance is poor, gasoline premix, diesel oil ignited motor arise at the historic moment, it is according to the characteristic of vapour, two kinds of fuel of diesel oil, gasoline is sprayed in engine inlets and form homogeneous charge, and by the diesel oil in-cylinder direct injection homogeneous charge that ignites.Experimental result shows, adopts the engine thermal efficiency of gasoline premix, diesel oil ignited technology to be significantly higher than petrol engine, can meet or exceed the level of diesel engine.
Application number is that 201210175963.6 Chinese utility model patent discloses a kind of gasoline premix, diesel oil ignited motor and controlling method thereof, this gasoline premix, diesel oil ignited motor comprise main control unit and the diesel engine for control engine action, the control signal output terminal of described main control unit connects diesel engine, on the admission line of diesel engine, be provided with at least one gasoline ejector, described gasoline ejector is total to rail by gasoline and connects gasoline electronic pump; Its controlling method is: main control unit receives the information that information acquisition unit collects; Main control unit is according to the various information judgement motors that receive at present in which kind of operating mode, and simultaneously according to engine operating condition, main control unit selects corresponding ignition way to make engine operation.The solution of this patent application is simple in structure, and cost is low, the discharge that can effectively reduce engine consumption and reduce harmful matter; But this gasoline premix, diesel oil ignited motor adopt the diesel oil ignited combustion mode of gasoline premix at cold starting, warming-up and idling operation, due to air inlet and reason the makes engine start stationarity such as cylinder temperature is low, emitted dose is few in diesel cycle is poor or cold starting difficulty, and warming-up, idling operation rotating speed are compared with high and circular wave is large; If this motor adopts diesel combustion mode at cold starting, warming-up and idling operation, need like this switching of two kinds of combustion modes particularly when engine cold starting, also need by heater plug, mixed gas in cylinder to be heated, make the control strategy of gasoline premix, diesel oil ignited motor complicated, relatively improve development cost, be unfavorable for the commercialization of gasoline premix, diesel oil ignited technology.
Model utility content
The purpose of this utility model is the drawback for prior art, provides a kind of and can simplify engine control strategy, reduction development cost, the gasoline premix that is conducive to realize again target for energy-saving and emission-reduction, the cold-start system of diesel oil ignited motor.
Problem described in the utility model realizes with following technical proposals:
A cold-start system for gasoline premix, diesel oil ignited motor, it comprises engine body, gas supply mechanism and diesel oil feed mechanism, its specialization is: it covers and be provided with the spark plug mating with engine cylinder number at cylinder.
The cold-start system of above-mentioned gasoline premix, diesel oil ignited motor, it is also provided with ignition control module, and described ignition control module is controlled by Engine ECU.
The cold-start system of above-mentioned gasoline premix, diesel oil ignited motor, described gas supply mechanism comprises gasoline oil pump, gasoline oil rail and gasoline ejector, described gasoline oil pump is connected in gasoline oil feed line, gasoline oil rail is set after gasoline oil pump, described gasoline oil rail is connected with gasoline ejector, described gasoline ejector quantity is mated with engine cylinder number, they be arranged in the air inlet pipeline of corresponding cylinder.
The cold-start system of above-mentioned gasoline premix, diesel oil ignited motor, described diesel oil feed mechanism comprises diesel oil oil pump, diesel oil oil rail and diesel injector, described diesel oil oil pump is connected in diesel oil oil feed line, diesel oil oil rail is set after diesel oil oil pump, described diesel oil oil rail is connected with diesel injector, described diesel injector quantity is mated with engine cylinder number, they be arranged on the combustion chamber top of corresponding cylinder.
The utility model changes the heater plug of existing gasoline premix, diesel oil ignited motor into spark plug, it is without the body structure of motor is done to larger change, realized gasoline premix, diesel oil ignited motor fast, stablize cold starting, and solved engine warm-up, idling operation rotating speed is higher and circular wave is large problem.The utility model makes gasoline premix, diesel oil ignited motor adopt compression ignite and light the novel combustion mode that two kinds of combustion manners coexist at cold starting, warming-up, idling operation, simplified motor control strategy, reduced development cost, be conducive to the realization of target for energy-saving and emission-reduction.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is the cold-start system schematic diagram of existing gasoline premix, diesel oil ignited motor;
Fig. 2 is the utility model schematic diagram.
In figure, each list of reference numerals is: 1, engine body, 2, gasoline ejector, 3, gasoline oil rail, 4, gasoline oil pump, 5, diesel injector, 6, heater plug, 7, diesel oil oil pump, 8, diesel oil oil rail, 9, spark plug.
Embodiment
Referring to Fig. 2, the utility model comprises engine body 1, gas supply mechanism and diesel oil feed mechanism, described gas supply mechanism comprises gasoline oil pump 4, gasoline oil rail 3 and gasoline ejector 2, described gasoline oil pump 4 is connected in gasoline oil feed line, at gasoline oil pump 4, gasoline oil rail 3 is set below, described gasoline oil rail 3 is connected with gasoline ejector 2, and described gasoline ejector 2 quantity are mated with engine cylinder number, they be arranged in the air inlet pipeline of corresponding cylinder; Described diesel oil feed mechanism comprises diesel oil oil pump 7, diesel oil oil rail 8 and diesel injector 5, described diesel oil oil pump 7 is connected in diesel oil oil feed line, at diesel oil oil pump 7, diesel oil oil rail 8 is set below, described diesel oil oil rail 8 is connected with diesel injector 5, described diesel injector 5 quantity are mated with engine cylinder number, they be arranged on the combustion chamber top of corresponding cylinder; Specialization of the present utility model is: it covers and be provided with the spark plug 9 mating with engine cylinder number at cylinder.
Referring to Fig. 1, Fig. 2, the utility model changes the heater plug 6 of existing gasoline premix, diesel oil ignited motor into spark plug 9, it does larger change without the structure of the body 1 to motor, realized gasoline premix, diesel oil ignited motor fast, stablize cold starting, and solved engine warm-up, idling operation rotating speed is higher and circular wave is large problem.
The cold starting process of gasoline premix, diesel oil ignited motor is: the first stage is pre-starting period, this stage is the operation carried out in advance before the ready to start of piloting engine (as pre-heating intaking, start low-temperature starting heater etc.), be the stage that (ECU start energising) experienced to turning crankshaft moment from start-up function, this stage is identical with diesel engine cold start control strategy; Second stage is starting period, from the outer power of motor drags bent axle rotation, and stage when running, rotating speed start to continue to rise voluntarily until engine speed surpasses the rotating speed of starter motor; Phase III is steady motion period, continue to rise, no longer by external force, drags, until the stage while reaching steady running from engine speed; Fourth stage is warm-up period, after motor steady running, adjusts rotating speed and carries out warming-up, until stage that can application of load.The combustion mode of gasoline premix, diesel oil ignited motor is the diesel oil of compression ignite in-cylinder direct injection, the gasoline of the gas-duct jetting that ignites, because this motor is in cold starting, warming-up and idling operation air inlet and cylinder temperature is low, diesel injection amount few (be less than or equal in same displacement, Operation mode cycle diesel injection amount 40%), make that engine start stationarity is poor or cold starting is difficult, and warming-up, idling operation engine speed are higher, and circular wave is large.For this reason, cold starting scheme of the present utility model starts to finish on the basis of diesel engine cold start control strategy to fourth stage from second stage, according to generator operating conditions (intake temperature, oil temperature and equivalent proportion etc.), before and after compression top center, carry out plug ignition, light with compression ignite cylinder in gas mixture, and other cold start strategies are identical with diesel engine.In addition, the ignition timing of spark plug 9 can be adjusted according to the starting operation resistance situation of motor when engine calibration, also can determine whether to reactivate spark plug 9 according to engine idle operation stability and idling speed height, fluctuation situation.
Claims (4)
1. a cold-start system for gasoline premix, diesel oil ignited motor, it comprises engine body (1), gas supply mechanism and diesel oil feed mechanism, it is characterized in that, it covers and is provided with the spark plug (9) mating with engine cylinder number at cylinder.
2. the cold-start system of a kind of gasoline premix according to claim 1, diesel oil ignited motor, is characterized in that, it is also provided with ignition control module, and described ignition control module is controlled by Engine ECU.
3. the cold-start system of a kind of gasoline premix according to claim 2, diesel oil ignited motor, it is characterized in that, described gas supply mechanism comprises gasoline oil pump (4), gasoline oil rail (3) and gasoline ejector (2), described gasoline oil pump (4) is connected in gasoline oil feed line, at gasoline oil pump (4), gasoline oil rail (3) is set below, described gasoline oil rail (3) is connected with gasoline ejector (2), described gasoline ejector (2) quantity is mated with engine cylinder number, they be arranged in the air inlet pipeline of corresponding cylinder.
4. the cold-start system of a kind of gasoline premix according to claim 3, diesel oil ignited motor, it is characterized in that, described diesel oil feed mechanism comprises diesel oil oil pump (7), diesel oil oil rail (8) and diesel injector (5), described diesel oil oil pump (7) is connected in diesel oil oil feed line, at diesel oil oil pump (7), diesel oil oil rail (8) is set below, described diesel oil oil rail (8) is connected with diesel injector (5), described diesel injector (5) quantity is mated with engine cylinder number, they be arranged on the combustion chamber top of corresponding cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533390.XU CN203463217U (en) | 2013-08-30 | 2013-08-30 | Cold-starting system of gasoline-premixed and diesel-ignited engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533390.XU CN203463217U (en) | 2013-08-30 | 2013-08-30 | Cold-starting system of gasoline-premixed and diesel-ignited engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463217U true CN203463217U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320533390.XU Expired - Fee Related CN203463217U (en) | 2013-08-30 | 2013-08-30 | Cold-starting system of gasoline-premixed and diesel-ignited engine |
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| CN (1) | CN203463217U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153891A (en) * | 2014-07-30 | 2014-11-19 | 长城汽车股份有限公司 | Diesel-petro engine start control system and method |
| CN104265471A (en) * | 2014-07-30 | 2015-01-07 | 长城汽车股份有限公司 | Combustion mode control system of gasoline premixing and diesel igniting engine and control policy thereof |
| CN105020040A (en) * | 2014-04-29 | 2015-11-04 | 长城汽车股份有限公司 | Start control method and system for igniting engine through gasoline premixed with diesel and automobile |
| CN105020043A (en) * | 2014-04-29 | 2015-11-04 | 长城汽车股份有限公司 | Control method and control system for igniting engine by premixing gasoline with diesel and vehicle |
-
2013
- 2013-08-30 CN CN201320533390.XU patent/CN203463217U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105020040A (en) * | 2014-04-29 | 2015-11-04 | 长城汽车股份有限公司 | Start control method and system for igniting engine through gasoline premixed with diesel and automobile |
| CN105020043A (en) * | 2014-04-29 | 2015-11-04 | 长城汽车股份有限公司 | Control method and control system for igniting engine by premixing gasoline with diesel and vehicle |
| CN105020040B (en) * | 2014-04-29 | 2018-01-16 | 长城汽车股份有限公司 | Gasoline premixes method for starting-controlling, system and the vehicle of diesel oil ignited engine |
| CN105020043B (en) * | 2014-04-29 | 2018-05-08 | 长城汽车股份有限公司 | Gasoline premixes control method, system and the vehicle of diesel oil ignited engine |
| CN104153891A (en) * | 2014-07-30 | 2014-11-19 | 长城汽车股份有限公司 | Diesel-petro engine start control system and method |
| CN104265471A (en) * | 2014-07-30 | 2015-01-07 | 长城汽车股份有限公司 | Combustion mode control system of gasoline premixing and diesel igniting engine and control policy thereof |
| CN104153891B (en) * | 2014-07-30 | 2017-02-15 | 长城汽车股份有限公司 | Diesel-petro engine start control system and method |
| CN104265471B (en) * | 2014-07-30 | 2017-03-22 | 长城汽车股份有限公司 | Combustion mode control system of gasoline premixing and diesel igniting engine and control policy thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20210830 |