US 11,873,746 B2
Vehicle
Ryo Nagai, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Apr. 24, 2023, as Appl. No. 18/138,369.
Claims priority of application No. 2022-082906 (JP), filed on May 20, 2022.
Prior Publication US 2023/0374924 A1, Nov. 23, 2023
Int. Cl. F01N 3/023 (2006.01); F01N 13/00 (2010.01); F01N 11/00 (2006.01)
CPC F01N 3/0233 (2013.01) [F01N 11/007 (2013.01); F01N 13/009 (2014.06); F01N 2560/025 (2013.01)] 4 Claims
OG exemplary drawing
 
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.