Method and apparatus for calculating torque of variable capacity

Details Method and apparatus for calculating torque of variable capacity Method and apparatus for calculating torque of variable capacity

1992-04-07

1994-02-15

Tanner, Harry B.

Refrigeration

Automatic control

Responsive to vehicle body motion or traction

623231, 123339, F25B 2700

Patent

active

052856496

ABSTRACT:
In a method for calculating torque for a variable capacity type compressor provided in a refrigeration circuit and driven by an engine to compress and discharge refrigerant to be circulated through a heat exchanger in the refrigerant circuit, a rotational speed of the compressor is calculated, a quantity of refrigerant discharged from the compressor and pressure of refrigerant in high-pressure side are calculated, a capacity of the discharged refrigerant during operation of the compressor is calculated based on the calculated discharged refrigerant quantity and the calculated rotational speed, and the torque is calculated based on the calculated refrigerant pressure and the calculated capacity.

REFERENCES:
patent: 4488411 (1984-12-01), Hara
patent: 4856291 (1989-08-01), Takahashi
patent: 4898005 (1990-02-01), Sakurai
patent: 4926651 (1990-05-01), Noguchi
patent: 5018362 (1991-05-01), Nagase et al.

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