Power indicating means and method for an internal combustion engine
AssigneeFuel Injection Development Corporation
InventorsErvin Leshner, Michael D. Leshner
Life of this patent
Estimating the term…
Abstract
The torque produced by an internal combustion engine is measured by algebraically combining averaged cylinder pressure with inlet manifold pressure, and manifesting the sum thereof. By multiplying the summed result by a factor representing engine speed, a direct measure of engine horsepower is obtained. The result may be displayed by an indicator or the like to provide an indication useful in operating or adjusting the engine.
Claims15
Apparatus for producing an indication of the torque being developed by an internal combustion engine, comprising:
- transducer means for developing a manifestation of the algebraic sum of combustion chamber pressure and inlet manifold pressure;
- adapter means for coupling said transducer means to a combustion chamber and to the inlet manifold of the engine;
- and
- indicator means operatively coupled to said transducer means for receiving said manifestation and providing an indication of engine torque in response thereto.
The method of producing an indication of the torque being developed by an internal combustion engine, comprising the steps of:
- deriving a first manifestation of pressure arising within a cylinder of the engine;
- deriving a second manifestation of pressure arising in the inlet manifold of the engine;
- and
- continuously algebraically summing said first and second manifestations to obtain the difference therebetween said difference comprising an indication of torque.
Dependencies are inferred from the claim text.