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US 6,634,325 B1Granted
Fuel injection system for linear engines
OwnerJoseph S. Adamsinventor
Life of this patent
Estimating the term…
Abstract
The fuel injector system of this invention is controlled via a diaphragm or piston referenced to a pressure pulse from a linear engine such as may be used for gas-powered fastening tools to inject fuel to the engine.
Claims30
An automatic fuel injection system for linear engines comprising a combustion chamber, the power from which drives a piston for use for gas-powered tools, the system comprising:
- a. a fuel source communicating through a fuel injection valve with the combustion chamber, the fuel injection valve moving between a first position allowing a charge of fuel from the source to pass into a fuel plenum and a second position allowing the charge of fuel in the plenum to pass into the combustion chamber;
- and
- b. an actuator for the injection valve responsive to compressed air associated with movement of the piston to move the fuel injection valve between the second position and the first position.
A fuel injection system for linear engines of gas-powered tools comprising:
- a fill valve for controlling the flow of fuel to a fuel plenum;
- a passageway for connecting the fuel plenum to a combustion chamber;
- a dump valve interrupting the passageway to the combustion chamber for controlling the flow of fuel from the fuel plenum to the combustion chamber;
- and
- an actuator responsive to air pressure changes generated by firing of the tool to operate at least one of the fill and dump valves.
2 more elements
Dependencies are inferred from the claim text.