Peugeot Citroen Automobiles Sa

Philippe Marcais

Emmanuel Boudard

Vital Bruzzo

Julien Berger

Anthony Frainet

Frederic Auge

Frédéric Auge

A device for cooling the heat engine, electrical components, and an electrical energy storage device including: a first circuit, a second circuit, and a third circuit for cooling each of the heat engine, the electrical components, and the electrical energy storage device, respectively; a heat exchange device separated into three members, including a high temperature member connected to the first circuit, a low temperature member connected to the second circuit, and a very low temperature member connected to the third circuit; an upstream valve connected between the first and the third circuit located upstream of the high temperature member of the heat exchanger in the first circuit; and, a downstream valve connected between the first circuit and the third circuit located downstream of the high temperature member of the heat exchanger in the first circuit, where the downstream valve is a thermostatic valve which is actuated as a function of the temperature of the heat transfer fluid in the first circuit and where the upstream valve is actuated as a function of flow of the heat transfer fluid in the first circuit.

Cooling device for a hybrid vehicle

The invention relates to an absorption air conditioner that comprises a desorber (), a condenser, an evaporator and an absorber, wherein the absorbing fluid may consist of lithium bromide. The method comprises the following steps: calculating the concentration of the absorbing fluid solution at the outlet of the desorber (); and comparing the calculated concentration with a predetermined critical value and, if the calculated concentration gets closer to the predetermined critical value, increasing the charge loss in the duct () connecting the desorber () to the condenser, which interrupts the condensation in the condenser and results in a pressure increase in the desorber that stops the desorption and in a concentration increase, the charge loss being on the other hand reduced for resuming the desorption when the calculated concentration deviates from the predetermined critical value. The invention can be used in automobiles and absorption air-conditioners.

Method for calculating and adjusting the concentration of absorbing fluid in an absorption air conditioning device, and absorption air conditioning device for implementing said method

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Courbevoie, France

Philippe Marcais