Systems and methods for diagnosing a vehicle engine intake manifold and exhaust system
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United States of America Patent
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Dec 6, 2022
Grant Date -
Jun 11, 2020
app pub date -
Feb 19, 2020
filing date -
Nov 6, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
Methods and systems are provided for pinpointing a source of degradation in a vehicle engine system. In one example, a method includes spinning an engine of a vehicle unfueled in a forward and a reverse direction, in no particular order, and recording a first intake air flow and a second intake air flow, respectively, in an intake of the engine, and where the source of degradation is indicated as a function of both the first air flow and the second air flow. In this way, the degradation of the vehicle engine system may be pinpointed as to being located in the intake manifold, the exhaust system, or the engine.
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International Classification(s)
- G01M:TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR S....
- B60W:CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT....
- F02M:SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBU....
- F02N:STARTING OF COMBUSTION ENGINES
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- F02D:CONTROLLING COMBUSTION ENGINES
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