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In-cylinder direct injection pressurized gasoline engine combustion system

A combustion system and in-cylinder direct injection technology, applied to combustion engines, internal combustion piston engines, cylinders, etc., can solve problems such as slow combustion speed, high fuel consumption, weak tumble level in cylinders, etc., to achieve enhanced tumble intensity, high The effect of compression ratio and simple structure

Inactive Publication Date: 2018-11-06
CHERY AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure high power output of traditional engines, the compression ratio of the engine is controlled below 11, and the high flow coefficient of the intake port is given priority, resulting in weak tumble flow in the cylinder, slow combustion speed, high fuel consumption under partial load, and the maximum thermal efficiency is only Can reach 36%, at a lower level

Method used

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  • In-cylinder direct injection pressurized gasoline engine combustion system
  • In-cylinder direct injection pressurized gasoline engine combustion system
  • In-cylinder direct injection pressurized gasoline engine combustion system

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Embodiment Construction

[0021] With reference to the accompanying drawings, the specific implementation of the present invention will be further described in detail through the description of the embodiments.

[0022] The combustion system of the in-cylinder direct injection supercharged gasoline engine of the present invention, such as figure 1 , 2 , 3, including the intake port 1 and the outlet port 4 communicating with the combustion chamber 6, the intake valve 2 is provided in the intake port 1, the outlet valve 5 is provided in the outlet port 4, and the bottom of the intake port 1 is provided There is an outer edge 11 of the air intake shield. The intake valve 2, the exhaust valve 4, the cylinder head, the piston 7, and the cylinder block are closed to form the cavity of the combustion chamber.

[0023] Such as figure 2 , 3 As shown in the figure, the intake shielding outer edge 11 is provided on the lower side of the outside of the intake valve 2. The length of the outer edge 11 of the intake shi...

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Abstract

The invention discloses an in-cylinder direct injection pressurized gasoline engine combustion system. The in-cylinder direct injection pressurized gasoline engine combustion system is characterized in that the in-cylinder direct injection pressurized gasoline engine combustion system comprises a gas inlet channel and a gas outlet channel which communicate with a combustion chamber, inlet valves are arranged in the gas inlet channel, outlet valves are arranged in the gas outlet channel, and a gas inlet shielding outer edge is arranged at the bottom of the gas inlet channel. The in-cylinder direct injection pressurized gasoline engine combustion system is simple in structure, the high compression ratio is provided, and the tumble intensity is improved, so that the design requirements for power performance and emission performance of an engine are met, and the in-cylinder direct injection pressurized gasoline engine combustion system has good application prospects.

Description

Technical field [0001] The invention belongs to the technical field of automobiles, and more specifically relates to a combustion system of a direct injection supercharged gasoline engine in a cylinder. Background technique [0002] As my country's fuel consumption and emission regulations become more stringent, improving engine thermal efficiency and reducing engine fuel consumption have become the focus of research by automobile manufacturers. As an important part of the combustion system development, there is still greater potential to be explored. In order to ensure high power output, the traditional engine controls the compression ratio of the engine below 11, and the intake port prioritizes the high flow coefficient, resulting in weaker in-cylinder tumble flow, slow combustion speed, higher fuel consumption under partial load, and maximum thermal efficiency. It can reach 36%, which is a relatively low level. Summary of the invention [0003] The purpose of the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B31/04F02F3/28F02F1/24F02F1/42
CPCF02B31/04F02B2031/006F02F1/242F02F1/4214F02F1/4221F02F3/28Y02T10/12
Inventor 琚雪明刘华龙刘义克胡鹏葛运朋牛晨晓
Owner CHERY AUTOMOBILE CO LTD
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