Gas injection valve for gas engine

Patent · Tue Aug 18 04:00:00 EDT 1987

OSTI ID:5987980

Ozu, T; Nakayama, N; Fujii, T

A gas injection valve is described for injecting gas into a combustion chamber of a gas engine, the injection valve comprising: an injection valve body having a nozzle chamber with nozzle holes for thus injecting fuel gas into a combustion chamber, means forming a first gas passage for introducing fuel gas into the body, and means forming a second gas passage having an upstream end communicable with the first gas passage and a downstream end communicable with the nozzle chamber; a first needle valve disposed between the first and second gas passages for closing and opening communication therebetween; a second needle valve disposed between the second gas passage and the nozzle chamber for closing and opening communication therebetween; actuating means for applying forces respectively for urging the first and second needle valves in the closing direction thereof; hydraulic actuating means for applying forces respectively urging the needle valves in the opening directions thereof; and means for, upon the second needle valve being prevented from closing, whereby the second gas passage is exposed to the reduced pressure of the combustion chamber, automatically moving the first needle valve to the closed position thereof.

• Assignee: Kawasaki Jukogyo Kabushiki Kaisha, Hyogo
• Patent Number(s): US 4687136
• OSTI ID: 5987980
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUIDS
FUEL GAS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
GAS FLOW
GAS FUELS
GASES
HEAT ENGINES
HYDRAULIC CONTROL DEVICES
INTERNAL COMBUSTION ENGINES
NOZZLES
PRESSURE DROP
VALVES