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Heat jet mechanism of lean-burn engine and combustion system of heat jet mechanism

A technology of combustion system and heat jet, applied in the direction of combustion engine, internal combustion piston engine, engine components, etc., can solve the problems of structural complexity and application cost increase, and achieve the goal of improving combustion stability, suppressing detonation, and simplifying the preparation process Effect

Active Publication Date: 2021-06-22
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the jet ignition device with separate fuel supply, although the mixture with high fuel concentration will be formed in the pre-combustion chamber through external premixing or direct injection, its structural complexity and application cost will increase greatly, and it is especially often necessary to The engine body has undergone major changes

Method used

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  • Heat jet mechanism of lean-burn engine and combustion system of heat jet mechanism
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  • Heat jet mechanism of lean-burn engine and combustion system of heat jet mechanism

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Embodiment Construction

[0027] Such as figure 1 As shown, the present invention consists of hot jet ignition system A, exhaust gas recirculation system B, throttle valve 1, fuel injector 2, intake manifold 3, joint a4, deflector 5, pre-combustion chamber intake pipe 6, intake valve 7. Joint b8, bolt group 9, exhaust valve 10, engine cylinder head 11, exhaust manifold 12 and combustion chamber 13, among which throttle valve 1 and deflector 5 are fixedly connected to intake manifold 3 from left to right Inside; the fuel injector 2 is fixedly connected to the left part of the intake manifold 3; the right end of the pre-combustion chamber intake pipe 6 communicates with the hole a27 of the support block C in the hot jet ignition system A through the joint b8; the left lower end of the pre-combustion chamber intake pipe 6 passes through The joint a4 communicates with the left part of the intake manifold 3; the bolt group 9 fixes the thermal jet ignition system A to the center of the cylinder head 11 throu...

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Abstract

The invention discloses a heat jet mechanism of a lean-burn engine and a combustion system of the heat jet mechanism, and belongs to the technical field of engines. A gas fuel thermal jet engine mechanism is improved, and high-concentration mixed gas at the outlet end of a fuel injector in a gas inlet channel is independently extracted and supplied to a pre-combustion chamber through a cam shaft and a valve mechanism. When the engine needs to be ignited, a sparking plug in the pre-combustion chamber ignites the rich mixed gas in the pre-combustion chamber in advance, and the high-temperature combusted compound in the pre-combustion chamber is jetted into a combustion chamber through the pressure difference between the pre-combustion chamber and the combustion chamber, so that the lean mixed gas in the combustion chamber is ignited, and the preparation process of the mixed gas in the pre-combustion chamber of the thermal jet engine is effectively simplified. Through the exhaust gas recirculation and air inlet layering technology, the combustion stability of the thermal jet engine is further improved, and meanwhile knocking and harmful pollutant emission are effectively restrained.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a heat jet mechanism of a lean-burn engine and a combustion system thereof. Background technique [0002] With the depletion of petroleum resources and the seriousness of environmental pollution, people have put forward higher and higher requirements for traditional vehicle power, and promoting the development of energy diversification and new energy-saving and emission-reduction technologies has become a key challenge. Natural gas, petroleum gas, coal gas, methane, hydrogen, biogas and other gaseous fuels are widely used due to their advantages of wide sources and low manufacturing costs. Due to its advantages of reducing engine pumping loss, heat transfer loss, and increasing specific heat ratio, dilution combustion has also become a potential energy-saving and emission-reduction technical measure for vehicle engines. [0003] When the engine adopts the dilution co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B19/10F02M26/13
CPCF02B19/1028F02B19/1057F02M26/13Y02T10/12
Inventor 解方喜王斌谷乐祺洪伟刘宇王忠恕李小平王金港苏岩姜北平金兆辉冯爽王向阳杨景勋
Owner JILIN UNIV
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