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Title: Cylinder-by-cylinder engine pressure and pressure torque waveform determination utilizing crankshaft speed fluctuations

Patent ·
OSTI ID:5493811

This patent describes a method of generating a signal related to the fluctuation of the pressure component of the torque or the mean engine torque or the engine pressure torque or the cylinder pressure produced by an internal combustion engine coupled through a drivetrain to a load, the method comprising the steps of determining the rate of rotation of a component of the engine-drive-train-load combination and generating a first signal related thereto, determining the inertial component of the torque produced by the engine and generating a second signal related thereto, and combining the first and second signals to provide the desired signal.

Assignee:
Purdue Research Foundation, West Lafayette, IN
Patent Number(s):
US 4843870
Application Number:
PPN: US 7-224548A
OSTI ID:
5493811
Resource Relation:
Patent File Date: 25 Jul 1988
Country of Publication:
United States
Language:
English