Accumulator injector

Patent · Tue Aug 12 04:00:00 EDT 1986

OSTI ID:5287103

Kelly, W W

An accumulator injector is described for injecting a pressurized charge of fuel into a cylinder of an internal combustion engine comprising: an injector body having a fuel inlet for receiving pressurized fuel at a supply pressure, an accumulator pressure chamber communicating with the fuel inlet for accumulating pressurized fuel, and a valve opening for discharging accumulated pressurized fuel; a control chamber communicating with the fuel inlet and adapted for rapid charging with pressurized fuel; pressure release means controllably actuable to effect a rapid decrease in pressure in the control chamber; a valve member axially displaceable in response to opposing pressures in the accumulator and control pressure chambers to open and close the valve opening; a shuttle bore forming opposing bleed chambers communicating with the control and accumulator pressure chambers; a shuttle piston means received in the shuttle bore and displaceable in response to the pressure differential between the control chamber and the accumulator chamber to inversely variably change the volume of the opposing bleed chambers so that actuation of the pressure release means results in a two-phase displacement of the valve member.

• Assignee: Stanadyne, Inc., Windsor, CT
• Patent Number(s): US 4605166
• OSTI ID: 5287103
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AUTOMOTIVE FUELS
CONTROL
CONTROL EQUIPMENT
CYLINDERS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUELS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PISTONS
PRESSURE CONTROL
PRESSURIZING
VALVES