Detection apparatus for at least one of temperature and pressure in a cylinder of an internal combustion engine

US10047644B2 · kind B2 · utility

Assignee

• Eaton Corporation · US

Inventors

• Dale Arden Stretch · Novi, US
• John A. Kovacich · Waukesha, US
• John Trublowski · Troy, US
• James E. McCarthy, Jr. · Canton, US
• Karen Evelyn Bevan · Northville, US
• Douglas J. Nielsen · Marshall, US
• David Yee · Hayward, US
• Evan Grimm · Danbury, US
• Xubin Song · Longbeilingcun, CN
• Martin Dale Pryor · Canton, US

Key dates

• Filing date: Dec 17, 2015
• Grant date: Aug 14, 2018
• Expiry date: Nov 7, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K2205/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

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.