Diesel-gasoline dual fuel sequential combustion direct injection engine

A technology of engine and diesel fuel injector, which is applied in the direction of combustion engine, internal combustion piston engine, engine components, etc. It can solve the problems of high hydrocarbon and carbon monoxide emissions, unsatisfactory emission level, high engine pumping loss, etc., and achieve low development cost , good hydrocarbon and carbon monoxide emissions, and the effect of saving oil resources

Active Publication Date: 2011-12-14
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, due to the way of injecting gasoline at the port, the engine pumping loss is higher, the charge coefficient is reduced, the tendency of knocking is increased, and the emission of hydrocarbons and carbon monoxide is higher, resulting in lower thermal efficiency than conventional diesel engines
On the other hand, the excess air coefficient of the entire engine is greater than 1, soot emissions still exist, nitrogen oxides are still high, and three-way catalytic converters cannot be used to completely convert hydrocarbon, carbon monoxide, and nitrogen oxide emissions, so the emission level Cannot meet the requirements of modern engines

Method used

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  • Diesel-gasoline dual fuel sequential combustion direct injection engine
  • Diesel-gasoline dual fuel sequential combustion direct injection engine

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Embodiment Construction

[0010] Below the embodiment of the present invention is described in detail, and this example is carried out under the premise of technical solution of the present invention, has provided detailed implementation mode and concrete operation process, but protection scope of the present invention is not limited to following embodiment .

[0011] Such as figure 1 As shown, the device includes: diesel oil tank 1, gasoline oil tank 2, gasoline oil return pipe 3, gasoline filter 4, gasoline oil pump 5, gasoline oil rail 6, electronic control unit 7, cooling water temperature sensor 8, knock sensor 9 , air mass flow sensor 10, intake pipe 11, gasoline oil pipe 12, electronic throttle valve 13, electronically controlled gasoline injector 14, electronically controlled diesel injector 15, exhaust pipe 16, particulate filter 17, three-way catalyst Converter 18, diesel high-pressure oil pipe 19, diesel high-pressure oil rail 20, diesel high-pressure oil pump 21, diesel oil return pipe 22,...

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Abstract

The invention discloses a direct injection engine with diesel-gasoline dual-fuel sequence combustion, belonging to the technical field of engines. On the one hand, the engine can simultaneously make use of diesel and gasoline, and the two fuels can be sequentially and directly injected in one cycle; on the other hand, according to the engine, a high-compression-rate and three-way catalysis aftertreatment device, so that the engine can realize the purposes of high thermal efficiency and low emission simultaneously.

Description

technical field [0001] The invention relates to an engine in the technical field of internal combustion engines, in particular to a diesel-gasoline dual fuel sequential combustion direct injection engine. Background technique [0002] The traditional diesel engine adopts the working method of direct injection near the top dead center, high compression ratio, and spontaneous ignition. Because the average concentration of the mixture in the cylinder is relatively lean, the local ignition is under the stoichiometric ratio, and the fuel concentration is extremely uneven, so the combustion There are always local high-temperature areas and local fuel-rich areas in the process cylinder, which have the characteristics of high thermal efficiency, low carbon monoxide and hydrocarbon emissions, high nitrogen oxides and soot particles, and cannot be greatly reduced at the same time. Nitrogen oxides in diesel engines are produced in high-temperature areas with local oxygen-enrichment; wh...

Claims

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Application Information

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IPC IPC(8): F02B3/06F02B7/00F01N3/10
CPCY02T10/18Y02T10/12
Inventor 吕兴才黄震
Owner SHANGHAI JIAO TONG UNIV
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