Process for determining gas-force transmitted torque to an inter

Details Process for determining gas-force transmitted torque to an inter Process for determining gas-force transmitted torque to an inter

1995-03-06

1996-08-20

Chilcot, Richard

Measuring and testing

Test stand

For engine

36443107, G01M 1500

Patent

active

055467938

ABSTRACT:
A process determines the torque transmitted by the gas forces to the crankshaft of an internal-combustion engine. The rotational speed data which is detected by determining the angular speed of a component fixedly connected with the crankshaft is analyzed, and the rotating moment is computed from the angular speed correlated with the rotational speed by way of the moment of inertia of the engine. In addition to the rotational moment of the engine, the torques of the oscillating masses, the torsional moments of the crankshaft and the static torques resulting from all slowly variable friction moments, effective moments and load moments are determined. From a balance of these individual torques, the torque resulting form the gas forces is determined. Subsequently, the work delivered by the individual cylinders per working cycle is determined from this torque. The thus determined operating parameters is used for the engine control and/or for the on-board diagnosis.

REFERENCES:
patent: 4301678 (1981-11-01), Full et al.
patent: 4843553 (1989-06-01), Ohata
patent: 4843870 (1989-07-01), Citron et al.
patent: 5222394 (1993-06-01), Imai
patent: 5359519 (1994-10-01), Jehanno
Engine Fault Analysis: Part II - Parameter Estimation Approach, A. Soqd et al., IEEE Transaction on Industrial Electronics IE-32 (Nov. 1985), No. 4 pp. 301-307.

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