A gas engine driven hybrid air conditioning system was constructed; it consisted of a gas engine, a single-stage compression-type refrigerator, and a single-effect absorption-type refrigerator that can be driven by shaft power and waste heat, respectively, from the gas engine.
The rapid advances in fuel efficiencies have come mostly through technological refinements on gasoline-powered cars and light trucks: lighter materials for bodies and powertrains; more efficient engines and air conditioning systems; more sophisticated automatic transmissions; engines that turn off and on quickly instead of idling at traffic signals.
Engine performance of modern engines depends on requirements of accessories, engine size, inlet and duct design, air conditioning system compressor, hydraulic pumps power, alternators power, inlet and exhaust duct losses,..
"The heating, ventilation and air conditioning system probably transferred a gas-rich mixture into the engine rooms".
Air conditioning system must be able to meet the condition requirement of air in the room.
For instance, the Marine Division of Caterpillar saved more than $650,000 by monitoring generators, engines, GPS and air conditioning systems.
ASE certification for automotive technicians is available for: electrical systems, brakes, steering and suspension, heat and air conditioning systems, engine repair, manual drive train and axles, automatic transmission/transaxles and engine performance.
