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US 4,109,518 AGranted
Engine monitoring apparatus
AssigneeCreative Tool Company
InventorsJoseph L. Dooley, Edward Yelke
Life of this patent
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AssigneeCreative Tool Company
InventorsJoseph L. Dooley, Edward Yelke
Estimating the term…
Engine monitoring apparatus is disclosed in which the cylinder pressure changes in a fuel injected engine are monitored through the use of a transducer device which produces an electrical signal responsive to pressures exerted on an injector nozzle from within the cylinder. The transducer is mounted to the nozzle holding brackets or fasteners which act to maintain pressure tending to seat the nozzle against an inlet port in the cylinder and, as such, is responsive to axial pressures exerted on the nozzle assembly from within the cylinder. Methods and apparatus for mounting the transducer device to the holding brackets of various types of nozzle assemblies are disclosed along with read-out devices including a tachometer circuit for utilizing the transducer output signal for performance monitoring and diagnostic applications.
In a performance monitoring system for engines having one or more cylinders adapted to receive fuel injected from a pump through a line and wherein said fuel line is normally terminated at one or more of its ends in a fitting which is sealed by a nut which surrounds the line, a transducer assembly for developing an electrical signal in response to fuel pressure tending to separate the fuel line from said fitting comprising a nut-shaped housing having a first cutaway portion extending axially along one side thereof to allow said housing to be placed around the fuel line, a stress responsive transducer material coupled to said housing for producing an output signal in response to mechanical stress on said housing, said transducer assembly being adapted to replace the nut on said line in coupling said line into sealing engagement with said fitting.
In a performance monitoring system for engines having one or more cylinders adapted to receive fuel injected from a pump through a line and wherein at least one end of said fuel line is normally terminated in a fitting, a transducer assembly for developing an electrical signal in response to fuel pressure tending to separate the fuel line from said fitting comprising:
A transducer assembly for a vehicle fuel line which is normally terminated at one or more of its ends in a compression fitting, said transducer assembly being adapted to develop an electrical signal in response to fuel pressure tending to separate the fuel line from said fitting and comprising:
In a performance monitoring system for engines having one or more cylinders adapted to receive fuel injected from a pump through a line and wherein at least one end of said fuel line is normally terminated in a fitting, the combination comprising:
Dependencies are inferred from the claim text.