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Igniting combustion system of engine preburning chamber

A technology of combustion system and pre-combustion chamber, which is applied in the direction of combustion engine, internal combustion piston engine, machine/engine, etc. It can solve the problems of not being able to use a higher compression ratio and the narrow concentration range of the ignition engine mixture, so as to improve the exhaust gas Pollution, reduced fuel consumption, and improved economy

Inactive Publication Date: 2007-05-16
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] In order to solve the above-mentioned problems of narrow concentration range of ignition-type engine mixture and the inability to adopt a higher compression ratio, the present invention provides a pre-combustion chamber combustion system of an ignition-type engine, which adopts high compression ratio and high air-fuel ratio, and adopts mass regulation, Utilize the local instantaneous low air-fuel ratio to ensure normal ignition and rapid combustion, so as to improve the thermal efficiency of the ignition engine and reduce exhaust pollution

Method used

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  • Igniting combustion system of engine preburning chamber

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Embodiment Construction

[0011] In the embodiment shown in Figures 1 and 2, a main combustion chamber 4 is formed by the cylinder head 1, the piston 2 and the cylinder liner 3, and a pre-combustion chamber 5 is arranged in the cylinder head 1, and the pre-combustion chamber 5 is composed of an insert The inner cavity of 9 is combined with the bottom of pre-chamber inlay 7, and the bottom of inlay 9 is provided with pre-chamber outlet 11. The spark plug 6 and the nozzle 8 are installed on the inlay 7, but the heads all extend into the pre-combustion chamber 5, and the auxiliary fuel beam sprayed by the nozzle 8 only forms a rich mixture in the pre-combustion chamber 5, so as to facilitate the ignition of the spark plug 6. And the main fuel beam directly shoots to the pre-chamber outlet 11 and enters the main combustion chamber 4 to form a lean mixture. This example uses a compression ratio of 14 and an overall air-fuel ratio of 21.

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Abstract

The ignition petrol engine combustion system applied high constringent ratio and high fuel ratio, multiple hole sprayer installed in the main combustor spout accessorial oil beam into the precombustion chamber formed hyper concentration mix air, while the main oil beam only forms into dilute mix air in the main combustor, through high constringent ratio is applied. The total fuel ratio is still very high. To ensure the ignition, the economy of the motor and ventilate contamination are improved.

Description

technical field [0001] The invention relates to an ignition type engine pre-combustion chamber combustion system capable of adopting high compression ratio and high air-fuel ratio, which belongs to the field of engine mixture gas formation and combustion. Background technique [0002] As we all know, gaseous fuels such as gasoline or LPG are difficult to spontaneously ignite, so this type of fuel engine has always used a combustion method of homogeneous mixture and ignited by an external source. In this way, there are two problems: one is that the mixture gas range is narrow during operation, α=0.6~1.2 (A / F=9~18), and it often works under the rich mixture gas of α<1, which will inevitably make the engine economical. And generate a large amount of CO; Second, both theory and practice have proved that increasing the compression ratio is the most effective way to improve the thermal efficiency of this type of engine, but it is limited by abnormal combustion such as deflagrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B19/14F02B19/00
CPCY02T10/125Y02T10/12
Inventor 隆武强
Owner DALIAN UNIV OF TECH
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