Camshaft phaser systems and method of commutating an electric motor for the same
US10119431B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Sep 23, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2009/2103
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system (42) including a phaser (28), a motor (38), and a controller (40) for controlling the phase between a camshaft (18) and a crankshaft (16) of an engine (10). The phaser (28) is attached to the camshaft (18), is in communication with the crankshaft (16), and is configured to adjust the phase of the camshaft (18). The motor (38) actuates the phaser (28) and is operatively attached to and in communication with the phaser (28) such that rotation of the crankshaft (16) back-drives the motor (38) to subsequently generate a signal. The controller (40) is in electrical communication with the motor (38), is responsive to the signal, and uses the signal to determine the rotational speed of the motor (38) to thereby commutate the motor (38) and subsequently drive the motor (38) so as to actuate the phaser (28) and control the phase of the camshaft (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.