Hydraulic hybrid vehicle method of safe operation
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United States of America Patent
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Feb 11, 2014
Grant Date -
May 17, 2012
app pub date -
Jan 23, 2012
filing date -
Oct 18, 2006
priority date (Note) -
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Abstract
A hydraulic hybrid vehicle includes elements such as a hydraulic pump driven by an internal combustion engine and arranged to draw in low pressure fluid and pump the fluid at high pressure to an accumulator. A hydraulic motor is powered by the pressurized fluid. Safety processes are provided for detecting and addressing a number of conditions that may arise in the operation of the hydraulic hybrid vehicle, including an initialization procedure for start-up of the vehicle, a shut-down procedure, and procedures for detecting and responding to failure of the pump or motor, internal and external fluid leaks, and non-responsive actuation and mode control systems.
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