US 11,867,170 B2
Decompression system and decompression method
Takumi Kawano, Wako (JP)
Assigned to Honda Motor Co., Ltd., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Jun. 23, 2022, as Appl. No. 17/847,320.
Claims priority of application No. 2021-106843 (JP), filed on Jun. 28, 2021.
Prior Publication US 2022/0412342 A1, Dec. 29, 2022
Int. Cl. F04B 49/03 (2006.01); F04B 49/22 (2006.01); F04B 49/06 (2006.01)
CPC F04B 49/03 (2013.01) [F04B 49/065 (2013.01); F04B 49/22 (2013.01); F04B 2205/05 (2013.01); F04B 2205/11 (2013.01); F04B 2207/03 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A decompression system that decompresses compressed gas generated by a gas generating device configured to generate the compressed gas, the decompression system comprising:
a flow regulating valve provided on a discharge flow path through which the compressed gas flowing out from the gas generating device flows, the flow regulating valve being configured to regulate a flow rate of the compressed gas;
a temperature sensor provided on the discharge flow path and configured to detect a temperature of the compressed gas;
a pressure sensor provided on the discharge flow path and configured to detect a pressure of the compressed gas;
an outside air temperature sensor configured to detect an outside air temperature of the gas generating device; and
a control device configured to control the flow regulating valve, the control device comprising one or more processors that execute computer-executable instructions stored in a memory, wherein
the one or more processors execute the computer-executable instructions to cause the control device to:
determine a regulating amount of the flow regulating valve based on the pressure detected by the pressure sensor, and correct the determined regulating amount based on the temperature detected by the temperature sensor,
measure a change rate of the pressure that is a change in the pressure per unit time, from a start of control of the flow regulating valve; and determine the regulating amount according to the measured change rate,
vary the regulating amount so as to reduce a difference between the measured change rate and a target change rate,
estimate a temperature gradient of the compressed gas based on the temperature detected by the temperature sensor at the start of the control of the flow regulating valve and the outside air temperature detected by the outside air temperature sensor at the start of the control of the flow regulating valve, and
further correct the determined regulating amount based on the estimated temperature gradient.