DETECTION APPARATUS FOR AT LEAST ONE OF TEMPERATURE AND PRESSURE IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE

An apparatus for measuring at least one of temperature and pressure within a cylinder of an internal combustion engine can include an engine valve and a sensor. The internal combustion engine can include a valvetrain having rocker arm assembly, a camshaft, a valve, and a hydraulic lash adjuster. The...

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Hauptverfasser: TRUBLOWSKI JOHN, GRIMM EVAN, SONG XUBIN, KOVACICH JOHN ALBERT, STRETCH DALE ARDEN, NIELSEN DOUGLAS J, PRYOR MARTIN, MCCARTHY, JR. JAMES EDWARD, BEVAN KAREN EVELYN, YEE DAVID
Format: Patent
Sprache:eng
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Zusammenfassung:An apparatus for measuring at least one of temperature and pressure within a cylinder of an internal combustion engine can include an engine valve and a sensor. The internal combustion engine can include a valvetrain having rocker arm assembly, a camshaft, a valve, and a hydraulic lash adjuster. The engine valve can have a valve head and a valve stem extending from the valve head in an axial direction. The valve head can have a valve face configured to be in pressure communication with an engine cylinder. The valve stem can have an outer surface with a cylindrical portion and a variably-shaped portion. The variably-shaped portion can define a target detectable by the sensor and the sensor can be installed adjacent to the target. Alternatively, the sensor can be positioned to detect a level of force at some point along the valvetrain.