Fluid-working machine and method of operating a fluid-working machine
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United States of America Patent
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Sep 15, 2015
Grant Date -
Mar 29, 2012
app pub date -
Feb 23, 2011
filing date -
Feb 23, 2010
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Abstract
In a method of operating a fluid-working machine, the volume of working fluid displaced during each cycle of working chamber volume is selected taking into account the availability of other working chambers. The status of each working chamber is monitored and a working chamber treated as unavailable if it is found to be malfunctioning. A working chamber may be treated as unavailable if it is allocated to an alternative working function. A fault may be detected in a working chamber by determining whether a measured output parameter of the fluid working machine fulfills at least one acceptable function criterion taking into account the previously selected net displacement of working fluid by a working chamber during a cycle of working chamber volume to carry out the working function.
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