Delphi Technologies, Inc.

Delphi Technologies IP Limited

Daniel George Gauthier

Jeffrey M Pfeiffer

James Patrick Waters

Thomas Huntington Fischer

Amanpal S Grewal

David Alexander Goulette

Daniel Lee McKay

David D Cabush

Sebastien Stoltz-Douchet

Alfredo Ibarra Covarrubias

A particulate matter sensor includes a first sensing electrode and a second sensing electrode spaced away from the first sensing electrode such that an electrode gap is formed between the first sensing electrode and the second sensing electrode upon which particulate matter is collected, thereby changing conductance between the first sensing electrode and the second sensing electrode. An ionic conductive material is in electrical communication with the first sensing electrode and the second sensing electrode.

Particulate matter sensor

A method is provided for sensing the position of a camshaft in an internal combustion engine having a camshaft phaser for controllably varying the phase relationship between a crankshaft of the internal combustion engine and the camshaft, the camshaft phaser being actuated by an electric motor and having a gear reduction mechanism with a predetermined gear reduction ratio and a sensor for determining the rotational position of the electric motor. The method includes generating a rotational position signal indicative of the rotational position of the electric motor by using the sensor to determine the rotational position of the electric motor and calculating the position of the camshaft based on the rotational position signal and the gear reduction ratio of the gear reduction mechanism.

Camshaft position sensing in engines with electric variable cam phasers

A method for operating a camshaft phaser in an internal combustion engine is provided. The camshaft phaser is used to control the phase relationship between a crankshaft and a camshaft of the internal combustion engine. The method includes determining that the internal combustion engine will be placed in an automatic stop mode. The camshaft phaser is then controlled to establish a predetermined phase relationship between the crankshaft and the camshaft. The internal combustion engine is then placed in automatic stop mode and the predetermined phase relationship is maintained by substantially blocking oil flow between the camshaft phaser and the internal combustion engine.

Method for operating a camshaft phaser

A method for operating an oil control valve in an internal combustion engine is provided. The oil control valve controls a camshaft phaser disposed at an output side of the control valve and includes a spool disposed in a spool housing. The camshaft phaser controls the phase relationship between a crankshaft of the internal combustion engine and a camshaft of the internal combustion engine. The method includes positioning the spool within the spool housing to substantially block oil flow between the camshaft phaser and the internal combustion engine when the engine is temporarily not running.

Method for operating an oil control valve

A standard cam phasing OCV may be employed as a virtual check valve to choke the backflow of oil during negative cam torque conditions, including execution of a duty cycle command in an event-based manner. Normally, OCV duty cycle commands are made on a time basis, but for VCV the duty cycle output change must be synchronized with engine events. A method is disclosed for calculating and delivering the VCV duty cycle so that both time-based and event-based controls are maintained and work together. Phase alignment of response time of the OCV solenoid is based upon cam target wheel edges and is event-based. An initial phase rate vs. phase angle is monitored by the Engine Control Module (ECM). Adjustment of the phase angle is provided to achieve maximum cam position phase rate.

Method for synchronizing an oil control valve as a virtual check valve

A vane-type camshaft phaser for varying the timing of combustion valves including a first torsional bias spring disposed on a cover plate spring guide and grounded to the cover plate and to a slot in a spring retainer to urge the rotor toward an intermediate locking position from any position retarded of the locking position. A second torsional bias spring also anchored to the cover plate and spring retainer urges the rotor in the advance direction over the full range of phaser authority to compensate for added camshaft torque loads imposed by non-valve actuating functions such as driving a mechanical fuel pump.

Vane-type cam phaser having dual rotor bias springs

The present invention is a method and apparatus to clean an oil control valve for use by an internal combustion engine. The invention causes the oil control valve to execute a cleaning routine when specific entrance criteria are met. This ensures cleaning of the valve to remove contaminants that are wedged, pinched or otherwise trapped on the valve, without interference in the operation of the engine.

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Clarkston, MI, United States of America

Daniel George Gauthier