Circumferential laminating combustion system of inside-cylinder direct injection for internal combustion engine

A stratified combustion and internal combustion engine technology, applied in fuel injection devices, internal combustion piston engines, charging systems, etc., can solve problems such as difficult-to-stratify charges and complex shapes of piston crowns

Inactive Publication Date: 2005-09-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this mixed gas stratification method, since the stratified quality is controlled by fluid dynamics, it is difficult to form a stable and reliable stratified charge under various working conditions, and the shape of the piston crown is relatively complicated.

Method used

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  • Circumferential laminating combustion system of inside-cylinder direct injection for internal combustion engine
  • Circumferential laminating combustion system of inside-cylinder direct injection for internal combustion engine
  • Circumferential laminating combustion system of inside-cylinder direct injection for internal combustion engine

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and the embodiments given by the inventor.

[0015] The cylinder direct injection circumferential stratified combustion system of the multi-hole injector includes: a combustion chamber 2 with the bottom surface of the cylinder head as the upper top and the upper surface of the ω-shaped piston as the lower bottom; a spark plug 3 arranged on the cylinder head and A multi-hole fuel injector 4; an intake valve 5 and an exhaust valve 6 arranged on the cylinder head; a spiral intake passage 7 communicates with the combustion chamber 2 through the intake valve 5 at its lower end, so that in the combustion chamber The incoming air is swirled; an exhaust passage 8 communicates with the combustion chamber 2 through the exhaust valve 6 at its lower end, so as to discharge the combustion gas in the combustion chamber.

[0016] The working process of the in-cylinder direct i...

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Abstract

The present invention discloses a directly-spraying circumferential layer combustion system in the cylinder of internal combustion engine capable of using several fuels of gasoline, methyl alcohol and ethyl alcohol, etc. It comprises a combustion chamber using undersurface of cylinder cap as upper top and using upper surface of omega piston as lower bottom, a spark plug and an oil nozzle, an air inlet and an exhaust outlet, a spiral air channel whose lower end is communicated with combustion chamber by means of air inlet to make the air fed into the combustion chamber form vortex flow and an exhaust channel whose lower end is communicated with combustion chamber by means of exhaust outlet to discharge the burnt gas from combustion chamber.

Description

1. Technical field [0001] The present invention relates to direct injection technology in cylinder of ignition type internal combustion engine, and further relates to a direct injection circumferential stratified combustion system in cylinder of internal combustion engine suitable for various fuels, especially suitable for spark ignition cylinder direct injection stratified combustion engine and alcohol fuel engine use. 2. Background technology [0002] The traditional ignition internal combustion engine burns a homogeneous mixture of gasoline and air (the homogeneous mixture is formed by the carburetor or fuel injection system in the intake system), and its power depends on the opening of the throttle valve in the intake system. Under small and medium load conditions, due to the small throttle opening, the vacuum in the intake pipe is high, which causes a large pumping loss and reduces the thermal efficiency of the engine. At the same time, due to the small throttle opening...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B17/00F02B19/08F02B31/00F02M61/18
CPCY02T10/146Y02T10/125Y02T10/12
Inventor 周龙保黄勇成刘圣华杜嘉陵韩志玉张玉银赵慧
Owner XI AN JIAOTONG UNIV
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