| 摘要 |
An electromagnetic drive clutch for the compressor in an air conditioning system for a bus used both in the city and in over-the-road operation incorporating two drive pulleys of different diameters, concentrically arranged armatures connected with the respective pulleys by a spring assembly, concentrically arranged coil assemblies and a common rotor associated with the coil assemblies and armatures to selectively drive the rotor from the smaller or larger pulley thereby varying the drive speed of the compressor and thus varying the output characteristics of the compressor to enable adequate cooling to be provided for the interior of the bus during over-the-road movement when the engine speed of the bus is relatively high and also adequate cooling during city driving when the engine speed of the bus is relatively low. The specific structural arrangement of the components of the drive clutch enables effective installation in new construction and also easy retrofit onto existing air conditioning compressors for buses with the specific construction and orientation of the components and their functional relationship being different from existing drive clutches for air conditioning compressors.
|
