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US 10,378,472 B2Granted
Hydrocarbon sensor diagnostic
AssigneeFord Global Technologies, LLC
InventorsAed M. Dudar, Douglas Raymond Martin, Kenneth James Miller
Life of this patent
Estimating the term…
Abstract
A hydrocarbon sensor diagnosis system includes a computer programmed to collect data from a hydrocarbon sensor while an exhaust gas recirculation system is in an open state. The hydrocarbon sensor is mounted along an engine air intake between an exhaust port of the exhaust gas recirculation system and an intake port of a cylinder head. The computer is further programmed to determine whether a hydrocarbon sensor fault exists based at least on the collected data.
Claims19
A system, comprising a computer programmed to:
- before starting an engine mounted to an engine air intake, collect data from a hydrocarbon sensor mounted along the engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state and while actuating a fuel injector mounted on the engine air intake;
- and
- determine whether a hydrocarbon sensor fault exists based at least on the collected data.
A method comprising:
- before starting an engine mounted to an engine air intake, collecting data from a hydrocarbon sensor mounted along the engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state and while actuating a fuel injector mounted on the engine air intake:
- and
- determining whether a hydrocarbon sensor fault exists based at least on the collected data.
A system, comprising a computer programmed to:
- collect data from a hydrocarbon sensor mounted along an engine air intake between an exhaust port of an exhaust gas recirculation system and an intake port of a cylinder head while the exhaust gas recirculation system is in an open state;
- and
- determine whether a hydrocarbon sensor fault exists based at least on the collected data and based on at least one of an ambient air temperature and a temperature of the cylinder head.
Dependencies are inferred from the claim text.