Bypass valve and visual indicators for a fuel system

Patent · Tue Jun 12 04:00:00 EDT 1990

OSTI ID:6661132

Alderfer, R R; Futa, P W

This patent describes a fuel system for an engine having a filter through which fuel from a pump passes to a regulator in response to an operator input. The regulator controls the flow of fuel presented to a combustion chamber in the engine, the regulator having a feedback apparatus to provide an operator with a signal indicative of the fuel supplied to the combustion chamber. It comprises: bypass means having a housing with a chamber therein, the chamber having an entrance port connected to the pump and an exit port connected to the regulator; piston means located in the chamber for separating the entrance port from the exit port, the piston having a face with a projection extending therefrom; stop means located in the chamber; resilient means located is the chamber for urging the piston means toward the stop means to prevent the flow of fuel from the pump through the housing to the regulator; and indicator means having a body retained in the housing with a first end which extends through the housing into the from a full-open position at which the closed circuit is fully opened to a full-closed position at which the closed circuit is fully blocked; ratio detecting means which detects the speed reduction ratio to find if the speed reduction ratio becomes substantially 1; and valve position detecting means which detects position of the direct clutch valve to find if the direct clutch valve is moved to a slight-open position at which the closed circuit is slightly opened.

• Assignee: Allied-Signal Inc., Morristown, NY (USA)
• Patent Number(s): US 4932205; A
• Application Number: PPN: US 7-315969A
• OSTI ID: 6661132
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FILTERS
FLOW REGULATORS
FLOWMETERS
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MEASURING INSTRUMENTS
METERS
VALVES