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Combustion engine

A technology for gas turbines and internal combustion engines, which is applied in the field of internal combustion engines and can solve the problems of self-ignition of air/fuel mixture and cylinder damage.

Inactive Publication Date: 2008-06-25
OTTONOVA AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution presented has some disadvantages in the form of risk of autoignition of the air / fuel mixture due to high compression, damage to the cylinder due to autoignition and / or high temperatures present during combustion
The engine in this solution can also only run on gas (LPG, liquid propane) as fuel

Method used

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  • Combustion engine
  • Combustion engine
  • Combustion engine

Examples

Experimental program
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Effect test

Embodiment Construction

[0061] Figure 1 illustrates a cylinder 1 in an engine with a piston 2 movable between two positions in the cylinder 2 to compress the air / fuel mixture injected from the inlet 4 in the position of the piston 2 in the cylinder 1 at a position (top dead center, TDC). A spark plug 3 (or similar ignition device) at TDC ignites the air / fuel mixture, and the combustion of fuel increases the pressure in cylinder 1, driving piston 2 away from the upper position. After combustion, the resulting exhaust gas is discharged through the exhaust outlet 5 . The inlet and outlet openings are controlled by respective valves 6 and 7 . The present invention is not limited to 2 valves per cylinder, but any suitable number of valves may be used as understood by those skilled in the art. The volume delimited by the piston 2 , the inner liner 13 of the cylinder and the top end of the cylinder (ie the end where the spark plug 3 is located) is the combustion chamber 11 .

[0062] Movement of the pist...

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PUM

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Abstract

The present invention relates to an internal combustion engine of piston type operating with a mixture of combustible fuel and air comprising at least one combustion chamber (11) and a piston (2) movably arranged in said combustion chamber (11) to compress the fuel and air mixture so as to provide a maximum compression ratio in the range of 15:1 to 25:1 ; an inlet (4) arranged in said combustion chamber for receiving an amount of said mixture of fuel and air into said combustion chamber (11); and an igniting device (3) arranged in said combustion chamber (11) for igniting said mixture of fuel and air received in said combustion chamber (11) at a crank shaft (9) angle position in the range of 0 degrees to 15 degrees after a top dead center (ATDC) of said piston in said combustion chamber (11); wherein the combustion chamber and piston is arranged to reduce the risk of hot spots and the engine is configured to have a burn rate where 90% of the fuel is burnt in a crank angle position range of between 15 DEG to 40 DEG . The invention also relates to a method or combustion, a vehicle, ship or power plant comprising the combustion engine according to the present invention.

Description

technical field [0001] The present invention relates to a spark ignition internal combustion engine of the piston type, and more particularly to an engine having a combustion cycle with ignition starting after top dead center. Background technique [0002] Gas engines have been developed extensively over the past 200 years, but the general basic principles remain the same, with the Otto type engine being one of the most common types of internal combustion engines. Otto type engines have a piston that compresses the air / fuel mixture inside the cylinder, and when the air / fuel mixture is compressed mostly at top dead center (the turning point of the piston inside the cylinder, top dead center, TDC), the electric The spark ignites the mixture and the explosion increases the pressure in the cylinder and drives the piston down from TDC and exerts a force that can be utilized in driving a process or an object connected to the engine such as the drive wheels of a vehicle. Ignition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B1/04F02B23/08
CPCF02D41/1455Y02T10/125F02P5/1502F02M17/10F02M19/08F02B23/08Y02T10/12F02B1/04
Inventor 延斯·韦尔福安德斯·埃隆松
Owner OTTONOVA AB