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The MorElectric system provides heating, cooling and accessory power, including battery charging, without idling the engine. Cat said trucks using the MarElectric technology will be equipped to accept two idling-reduction options. The first is shore power to reduce idling at truck stops, loading docks or fleet terminals where electric power plug-in facilities are available.The second option will be an onboard auxiliary power unit to provide cab comfort until shore power expands and becomes more widely available, all with an eye on reducing vehicle idling fuel consumption, emissions, and noise. Engine idling is an increasing concern throughout the engine-powered equipment markets. Specifically in the truck market, with accessories dependent on engine speed, low idle off en doesn''t provide adequate air conditioning, 12 Vd.c. electrical power or heat rejection capacity. Trucks use their cruise control to elevate the idle speed which in turn elevates the fuel consumption, emissions and noise issues.

The use of permanent magnets instead of rotor windings makes the motor smaller and lighter than induction motors. Using magnetic-bearing technology, a 75-ton compressor weighs 265 lb--about one-fifth the weight of a conventional compressor.A variable-speed drive (VSD) is required for the motor to operate. The VSD varies the frequency between 300 and 800 Hz, which provides a compressor-speed range from 18,000 to 48,000 rpm. This avoids a gear set. The VSD is integrated into the compressor housing, avoiding long leads and allowing key electronic components to be refrigerant-cooled. The VSD also acts as a soft starter; as a result, the compressor has an extremely low startup in-rush current: less than 2 amps, compared with 500 to 600 amps for a traditional 75-ton, 460-v screw compressor with a cross-the-line starter.

Name valve_positionType queryParams valve (process/pps_select)Outs value (for process:primary/secondary/purge/off/unknown;for pps_select:pps/tank/reject/off/unknown), and result(okay or Err)Function: Checks V02 or V03. One of lines V02_i1 through V02_i3 orV03_i1 through V03_i3 will be hi, and the rest will be low. If allare low, the result is off. Any other pattern is unknown.Name valve_atType eventParams valve (process/pps_select), value (for