Back to results
US 8,561,588 B2Granted
Engine stop/start system and method of operating same
AssigneeGM Global Technology Operations LLC
InventorsMichael G. Reynolds, William C. Albertson
Life of this patent
Estimating the term…
Abstract
A method of operating an engine stop/start system includes connecting an armature of a starter motor to the engine through an overrunning clutch when the engine changes a rotational direction.
Claims7
A method of operating an engine stop/start system comprising:
- receiving an engine stop request;
- reducing a forward speed of an engine in response to the engine stop request;
- and
- when the forward speed of the engine is equal to a predetermined engine speed that is greater than zero during the engine stop request and prior to receiving an engine start request, selectively connecting an armature of a starter motor to a flywheel ring gear of the engine via a mechanical overrunning clutch and a pinion gear.
1 more element
An engine stop/start control system comprising:
- an engine speed sensor that measures an engine speed;
- and
- an engine damping module that:
- communicates with the engine speed sensor, and
- during an engine stop request, slows a forward engine speed of the engine and generates a first signal during the engine stop request when the forward speed of the engine is equal to a predetermined engine speed that is greater than zero;
- and
- a solenoid control module that, in response to the first signal during the engine stop request and prior to receiving an engine start request, selectively connects an armature of a starter motor to a flywheel ring gear of the engine via a mechanical overrunning clutch and a pinion gear.
4 more elements
Dependencies are inferred from the claim text.