Throttle predictive controller in automatic engine tester

Details Throttle predictive controller in automatic engine tester Throttle predictive controller in automatic engine tester

1990-06-05

1993-03-16

Lall, Parshotam S.

Boots, shoes, and leggings

3644241, 364425, 364579, 36455101, 73116, 73117, 7386218, G01L 322, G01L 314

Patent

active

051950383

ABSTRACT:
Throttle predictive controller in an engine tester includes an operation pattern generator (5); an operational processing unit (4) consisting of a throttle predictive angle calculation part (1), a throttle angle-corresponding to acceleration calculation part (2) and an adder (3); a dynamometer controller (6); a throttle amplifier (9); a throttle actuator (10); a dynamometer (11); and a tachometer (12). The operation pattern generator inputs a set revolution speed signal (n) to the throttle predictive angle calculation part, the throttle angle-corresponding to acceleration calculation part and the throttle amplifier, and inputs a set torque signal (T) to the throttle predictive angle calculation part and the dynamometer controller. The dynamometer controller controls dynamometer torque coupled to an output shaft S of an engine being tested, and is connected to a revolution pickup (12) for the shaft to input a dynamometer actual revolution speed signal during the operation of the engine; the dynamometer controller is further connected to input an actual dynamometer torque signal and a dynamometer actual revolution speed signal at the time of operation of the engine to the throttle predictive angle calculation part, and the throttle amplifier is connected to input the actual throttle angle signal to the throttle predictive angle calculation part which in the operational processing unit prepares a map on the basis of the actual number of revolutions, the actual torque and the actual throttle angle.

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SAE Paper 840347, J. Koustas and N. Watson, "A Transient Diesel Test Bed With Direct Digital Control", pp. 43-58, Dec. 1988.

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