Motor vehicle air conditioning control system

B - Operations – Transporting – 60 – H

Patent

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Details

B60H 1/32 (2006.01)

Patent

CA 2218409

An air conditioning control system with a hermetic compressor for a motor vehicle is disclosed. The control system comprises a system for controlling the speed of the hermetic compressor (34) in such a way that the compressor driven by a variable-displacement pump assembly (30) coupled to a fixed-displacement hydraulic motor (33) rotates at a speed that is as close as possible to the rated compressor speed, and a sensor device (8) enables measurement of the rotation speed of the shaft of the hydraulic motor (33) connected to the compressor (34), so that a comparator (1) can change the forward direction of the plate (31) of the variable-displacement pump (30) depending on the changes in the speed of the hydraulic motor relative to a set speed.

La présente invention concerne un système de commande d'air conditionné à compresseur hermétique pour véhicule automobile caractérisé en ce que le système de commande comporte un système de régulation de la vitesse de rotation du compresseur hermiétique (34), tel que le compresseur entraîné par un ensemble pompe (30) à cylindrée variable accouplée à un moteur hydraulique (33) de cylindrée constante tourne à une vitesse aussi proche que possible de la vitesse nominale du compresseur et un dipositif capteur (8) permet de mesurer la vitesse de rotation de l'arbre du moteur hydraulique (33) relié au compresseur (34) de façon à faire varier par le comparateur (1) le sens de déplacement du plateau (31) de la pompe (30) de cylindrée variable en fonction des variations de vitesse du moteur hydraulique par rapport à une vitesse de consigne.

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