Methods and system for diagnosing a high-pressure fuel pump in a fuel system
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United States of America
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Jan 7, 2020
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Aug 2, 2018
app pub date -
Dec 12, 2017
filing date -
Dec 12, 2017
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Abstract
Various methods and systems are provided for health assessments of a fuel system. In one example, a fuel system includes a high-pressure fuel pump operable to increase fuel pressure from a first pressure to a second pressure, a common fuel rail fluidly coupling the high-pressure fuel pump to a plurality of fuel injectors each of which is operable to inject fuel to individual cylinders of an engine, a pressure sensor operable to detect a pressure of fuel at the common fuel rail, and a controller operable to diagnose a condition of the high-pressure fuel pump based on output from the pressure sensor.
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