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Miller cycle gasoline engine

A gasoline engine, Miller cycle technology, applied in the direction of engine components, combustion engines, machines/engines, etc., can solve the problems that cannot meet the fuel consumption and emission requirements well

Active Publication Date: 2020-12-15
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present disclosure, the inventors found that the highest thermal efficiency of the existing Miller cycle gasoline engines of major automobile manufacturers can only reach about 37%, which cannot well meet the fuel consumption and emission requirements

Method used

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  • Miller cycle gasoline engine
  • Miller cycle gasoline engine
  • Miller cycle gasoline engine

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0064] Before the implementation of the present application is further described in detail, the orientation nouns involved in the embodiments of the present application, such as "upper", "lower", and "side", are only used to clearly describe the Miller of the embodiments of the present application. The structure of the cycle gasoline engine does not have the significance of limiting the protection scope of this application. In order to cope with the increasingly te...

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Abstract

The embodiment of the invention provides a Miller cycle gasoline engine. An air inlet channel (1) is in a fish maw shape, so that more air in the air inlet channel (1) can enter a cylinder cover fromthe upper side of an air inlet valve (3), and the tumble flow speed of the air in an engine air cylinder is increased. An air inlet cam shaft (2) is a Miller cam shaft, due to the fact that the Millercam shaft is adopted as the air inlet cam shaft (2), the expansion ratio of the engine can be larger than the compression ratio, the heat efficiency is improved, the fish-maw-shaped air inlet channel(1) further improves the air inlet tumble speed in the engine air cylinder, and tumble flow is large-scale airflow movement in the air cylinder. A piston (6) at the last stage of a compression strokemoves upwards to extrude and break the large-scale tumble flow in the air cylinder into small-scale turbulence, the higher the turbulence intensity is, the faster the combustion is during ignition, and therefore the heat efficiency of the gasoline engine is further effectively improved.

Description

technical field [0001] The invention relates to the field of high-efficiency gasoline engines, in particular to a Miller cycle gasoline engine. Background technique [0002] In order to meet the increasingly stringent emission and fuel consumption regulations, major automobile manufacturers have begun to research high-efficiency gasoline engines, improve engine thermal efficiency, and thereby reduce fuel consumption. [0003] The Miller cycle gasoline engine has been adopted by more and more automobile manufacturers because its expansion ratio is greater than the compression ratio, which can effectively improve thermal efficiency. [0004] In the process of realizing the present disclosure, the inventors found that the maximum thermal efficiency of the existing Miller cycle gasoline engines of major automobile manufacturers can only reach about 37%, which cannot well meet the requirements of fuel consumption and emission. Contents of the invention [0005] In view of this...

Claims

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Application Information

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IPC IPC(8): F02M35/10F01L1/047F01L1/08F01L1/26F02F1/42F02F1/24F02F3/00F02F1/14F02F1/40
CPCF02M35/10091F02M35/10124F01L1/047F01L1/08F01L1/26F02F1/4235F02F1/242F02F3/00F02F1/14F02F1/40F02B2275/32Y02T10/12
Inventor 刘义克刘华龙赵世超
Owner CHERY AUTOMOBILE CO LTD