Patent ID: 11873746
Assignee: SUBARU CORPORATION
Field: Environmental technology (Chemistry)
Classification: CPC F | IPC F

Claim 0:
1. A vehicle comprising:
a filter disposed in an exhaust passage coupled to an engine;
a negative-pressure mechanism configured to pressurize a portion of the exhaust passage upstream of the filter to a negative pressure less than an atmospheric pressure; and
a first opening and closing mechanism comprising an opening disposed in the exhaust passage, and a valve configured to selectively open and close the opening, the valve being configured to, when the exhaust passage becomes negatively pressurized by the negative-pressure mechanism, open the opening wherein the negative-pressure mechanism comprises a controller, the controller comprising one or more processors and one or more memories, the one or more memories being coupled to the one or more processors, and wherein the controller is configured to negatively pressurize the exhaust passage by causing the engine to rotate in a reverse direction, the reverse direction being opposite to a direction in which the engine is rotated in activating a drive system.