| 摘要 |
<p>PURPOSE:To restrain increase of car speed by changing transmission direction of pressure from both the upper stream and the lower stream pressure takeout ports of a compressor to the waist gate valve to another transmission direction thereof from the lower stream pressure takeout port to the waist gate valve to open the valve when speed of a vehicle reaches a limit speed. CONSTITUTION:When a normal speed of a car is within a limit speed range, a solenoid vavle 19 is kept unelectrified and a port 19 is kept open so that a lower supercharging pressure is sent into a pressure chamber 12a to close a waist gate valve 13. The supercharging pressure will then be controlled to a relatively high level. If the car speed then reaches the limit speed, the solenoid valve 19 is electrified to open a port 19b. A relatively high supercharging pressure is sent into the pressure chamber 12a to open the waist gate 13. The supercharging pressure will then be controlled to a relatively low level.</p> |
