Cooling system for a vehicle having an internal-combustion engin

Details Cooling system for a vehicle having an internal-combustion engin Cooling system for a vehicle having an internal-combustion engin

1992-02-04

1993-06-01

Kamen, Noah P.

Internal-combustion engines

Cooling

Parallel flow

123 4105, 123 411, 123 4131, 123 4133, F01P 300

Patent

active

052150445

ABSTRACT:
A cooling system for a vehicle having an internal-combustion engine has a plurality of cooling circuits with heat exchangers for each circuit. The temperatures of different cooling media are measured and processed in a switching device to form an output signal which serves to control a fan. In this way, the air flow through the heat exchangers can be varied depending on measured temperature conditions. Individual capacity control of each cooling circuit is possible, thereby preventing unfavorable operating conditions in the individual circuits. The cooling capacity demand of the individual cooling circuits is determined by a central control unit which receives signals from temperature sensors in each circuit. The central control unit includes a microprocessor. Each cooling circuit has an actuating means for individually controlling the capacity of the relevant heat exchanger.

REFERENCES:
patent: 3498539 (1970-03-01), Boehmfeld et al.
patent: 4413596 (1983-11-01), Hirayama
patent: 4434749 (1984-03-01), Morita et al.
patent: 4539943 (1985-09-01), Tsuchikawa et al.
patent: 4556171 (1985-12-01), Fukami et al.
patent: 4726325 (1988-02-01), Itakura
patent: 4893590 (1990-01-01), Kashimura et al.

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