The world's first continuous variable capacity rotary compressor for automotive air conditioning, DCV-14A, has been developed. Compressors for automotive air conditioning are classified broadly into swash plate type, rotary type, radial piston type, wobble plate type and scroll type. Among these compressors, the wobble plate type is the only compressor that has been made continuously variable capacity. Meanwhile, the development of a rotary variable capacity compressor has been attempted, but it has been successful only in stepwise variation of capacity. The DCV-14A, however, has made continuous variable capacity possible, and it has eliminated problems that the wobble plate type variable capacity compressors have; such as noise, vibration, and insufficient reliability.