Pump Arrangement And System For A Motor Vehicle
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United States of America Patent
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Issued Date -
Jun 2, 2016
app pub date -
Aug 11, 2014
filing date -
Aug 23, 2013
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Abstract
A pump arrangement for a motor vehicle includes a high pressure pump for delivering a fluid, which pump includes a fluid inlet, a fluid outlet, and a pressure chamber arranged hydraulically between the fluid inlet and the fluid outlet, a first pressure limiting valve having an inlet side coupled to the fluid outlet of the high pressure pump, and a second pressure limiting valve, wherein the two pressure limiting valves are connected hydraulically in parallel. Each pressure limiting valves has an opening pressure, wherein the opening pressure of the first pressure limiting valve is greater than the opening pressure of the second pressure limiting valve, and the opening pressure of the second pressure limiting valve is predefined based on an injector hydraulically coupled to the pump arrangement.
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