Patent ID: 8919485
Filing Date: 2014-12-30
Classification: B60K,B62M,F01B

Abstract:
1. A vehicle that runs with an air engine, the air engine including a gas machinery, wherein the air engine includes: a gas container in which a compressed gas is accumulated; the gas machinery that is driven by the compressed gas supplied from the gas container; a control valve that controls an output of the gas machinery; a piping unit that connects the gas container and the control valve; and a pressure gauge that detects a pressure of the compressed gas at the piping unit, the vehicle comprising: a manipulation instruction unit that outputs a command value corresponding to a target output of the gas machinery; and a control device that operates the control valve based on the command value from the manipulation instruction unit, and controls the output of the gas machinery such that the target output is obtained, wherein the control device includes: a pressure measuring unit that measures the pressure of the compressed gas at the piping unit based on an output of the pressure gauge; and a determination unit that determines a leakage state of the compressed gas based on a change in pressure, which is measured by the pressure measuring unit every time the target output of the gas machinery becomes substantially zero, wherein the control device compares the pressure, which is measured by the pressure measuring unit at the time the target output of the gas machinery becomes substantially zero, to a pressure that is measured by the pressure measuring unit after a given time elapses, the control device determines that the compressed gas leaks when a pressure difference is greater than a given amount, and the control device suspends the determination of the leakage state when the target output of the gas machinery changes from substantially zero within the given time, wherein the vehicle further comprises a speed measuring unit that measures a speed of the vehicle, and wherein the control device determines the leakage state only when the measured speed of the vehicle is greater than or equal to a given amount.