A hybrid vehicle can be classified according to its electrification level: generator power, voltage... Micro, mild and full ones can be distinguished. Air conditioning must be adapted accordingly. With low electrical power, mechanical compressor must be maintained, while electrically driven compressor can be installed when the alternator power exceeds 6 kW. In micro hybrids and in mild hybrids, the belt driven compressor does not run during engine cut-off in stop-start mode. In order to maintain air conditioning, a thermal storage solution is proposed. This system consists of a phase change material located in the HVAC unit and an optimised controller. It provides sufficient cabin cooling for up to 45 seconds at 35 deg C, which meets the need in standard drive cycle and covers 99 % of real world conditions. In powerful mild hybrids and in full hybrids, electrical air conditioning works when the engine is off. It draws electricity from batteries. The additional benefits it brings are: better refrigerant containment, lower average power consumption and easier location in the car. Valeo and Ricardo have demonstrated this system in their 'i-MoGen' 42V prototype.
Air conditioning systems adapted to vehicle electrification range
Eine Klimaanlage angepaßt an das elektrische Fahrzeugnetz
2003
10 Seiten, 9 Bilder, 3 Tabellen, 10 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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