| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a capacity control unit of a variable capacity type compressor which can inexpensively control first and second control valves each consisting of a solenoid valve. <P>SOLUTION: The capacity control unit includes an air intake passage 29 which connects a crankcase 15 and a discharge chamber 24 to each other, the first control valve 61 which can regulate the degree of opening of the air intake passage 29, first and second air bleed passages 27, 28 which connect the crankcase 15 and a suction chamber 23 to each other, and the second control valve 62 which can regulate the degree of opening of the first air bleed passage 27. An air conditioner ECU 40 outputs a duty ratio to the first control valve 61 and the second control valve 62. The second control valve 62 increases the valve opening degree when the duty ratio output from the air conditioner ECU 40 is heightened, and reduces the valve opening degree when the duty ratio is lowered. The first control valve 61 reduces the valve opening degree when the duty ratio output from the air conditioner ECU is heightened, and increases the valve opening degree when the duty ratio is lowered. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
