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Combustion organizing method and combustion system

A technology of combustion system and organization, which is applied in the direction of combustion engine, internal combustion piston engine, machine/engine, etc., can solve the problems such as unable to suppress detonation, and achieve the effect of good industrialization prospect, low energy density, efficient and clean combustion

Inactive Publication Date: 2014-06-25
TSINGHUA UNIV
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Problems solved by technology

[0005] The present invention provides a combustion organization method and a combustion system to solve the technical problem in the prior art that knocking cannot be economically and effectively suppressed under the theoretical air-fuel ratio

Method used

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  • Combustion organizing method and combustion system
  • Combustion organizing method and combustion system
  • Combustion organizing method and combustion system

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Embodiment 1

[0056] Embodiment 1 of the present invention provides a combustion system to describe the specific implementation process of the embodiment of the present invention in detail, see Figure 4 :

[0057] Step 401: Installing an intake port injection device 202 on a high compression ratio direct injection engine to inject high-octane fuel mixture.

[0058] In this embodiment 1, a high compression ratio (11-14) in-cylinder direct injection engine is used, the engine contains an in-cylinder direct injection device 201, and a set of intake air is installed on the intake port 1 of the engine. Road injection device 202, see Figure 5 . When the engine is running, the intake port 1 injection device 202 is used to inject a high-octane fuel mixture 2 in the intake port 1, including high-octane alternative fuels such as methanol, ethanol, and methane.

[0059] Step 402: Utilize the in-cylinder direct injection device to inject high energy density fuel mixture to form stratified equivale...

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Abstract

The invention provides a combustion organizing method and a combustion system. The combustion organizing method includes the steps that high-energy density fuel mixed gas is formed on the periphery of a spark plug of an engine in a gasoline direct injection mode, wherein the excess air coefficient of the high-energy density fuel mixed gas is smaller than 1, and the high-energy density fuel low calorific value is larger than or equal to 44,000 kilojoules per kilogram; high octane value fuel mixed gas is formed on the periphery of an air cylinder wall of the engine in a port fuel injection mode, wherein the excess air coefficient of the high octane value fuel mixed gas is larger than 1, the octane value is larger than or equal to 95, and the high-energy density fuel mixed gas and the high octane value fuel mixed gas form layered equivalent ratio mixed gas inside an air cylinder of the engine. According to the combustion organizing method and the combustion system, the knocking phenomenon of the high-compression-ratio engine can be effectively restrained, the important support is provided for energy saving and emission reduction of the engine, cost is low, the powerful support is provided for technology upgrading of existing engine products, and the industrialized prospect is good.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a combustion organization method and a combustion system. Background technique [0002] The automobile industry is an important part of my country's economic structure, and most passenger cars use gasoline engines as their power source. Compared with traditional gasoline engines, Gasoline Direct Injection (GDI) has significant energy-saving and emission-reduction capabilities, and has become the mainstream of gasoline engine development, while supercharged direct injection and light weight have become the main technology for the industrialization of GDI gasoline engines route. [0003] However, for the GDI gasoline engine that adopts supercharged direct injection lightweight technology, its thermal efficiency is still lower than that of a diesel engine. One of the main reasons is that knocking limits the increase of its compression ratio. An important path t...

Claims

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Application Information

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IPC IPC(8): F02B23/10F02B17/00
CPCY02T10/12
Inventor 王志刘辉王建昕
Owner TSINGHUA UNIV
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