Pre-combustion chamber gas engine

Internal-combustion engines – Precombustion and main combustion chambers in series – Chamber temperature control means

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Details

123257, 123270, 123279, 123292, F02B 1902

Patent

active

053335821

ABSTRACT:
This invention provides a pre-combustion chamber gas engine capable of being applied to a two-stroke gas engine using a natural gas as fuel. A gas fuel is supplied to precombustion chambers with communication ports, which allows communication between primary chambers and pre-combustion chambers, closed with control valves provided therein, and suction air is supplied to cylinders and compressed under a high pressure. Even when the suction air is compressed under a high pressure in the primary chambers, the self-ignition of gas fuel does not occur therein since a gas fuel does not exist therein, so that knocking does not occur. Each of the control valves provided in the communication ports is constructed so that a lift amount thereof can be varied by a controller. A magnetic force is controlled by regulating the level of an electric current supplied to each coil, in response to a detected signal from a load sensor, and the lift amount of the control valve can be controlled by the resultant magnetic force against the resilient force of a leaf spring. The compressed air is introduced into each pre-combustion chamber by opening the relative communication port, and ignited and burnt. An annularly and conically expanded flame ejected from each pre-combustion chamber then crosses a squish flow in the relative primary chamber to accelerate the mixing of the flame with suction air, reduce the length of combustion time and complete the secondary combustion of the gaseous mixture.

REFERENCES:
patent: 4939984 (1990-07-01), Fletcher-Jones
patent: 4998517 (1991-03-01), Kawamura
patent: 5054443 (1991-10-01), Kawamura
patent: 5069178 (1991-12-01), Kawamura
patent: 5115775 (1992-05-01), Gruenwald
patent: 5156123 (1992-10-01), Kawamura
patent: 5178109 (1993-01-01), Kawamura

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