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US 2018/0362017 A1Published application
Methods and system for adjusting engine torque
AssigneeFord Global Technologies, LLC
InventorsJason Meyer, Walter Joseph Ortmann, Jeffrey Allen Doering, Kevin Ray Ruybal
Life of this patent
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Abstract
Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, and a transmission are described. In one example, values of an engine spark to engine torque relationship are adjusted to improve engine torque control. The engine is subsequently operated responsive to adjusted values of the engine spark to engine torque relationship.
Claims20
A driveline operating method, comprising:
- maintaining an engine at idle speed and operating the engine in a torque control mode while input clutches of a transmission are open in response to a request to adapt values of an engine spark to engine torque relationship, the engine positioned upstream of the input clutches;
- adjusting the values responsive to engine torque while maintaining the engine at idle speed;
- and
- operating the engine responsive to the values.
1 more element
A driveline operating method, comprising:
- operating an integrated starter/generator (ISG) in a speed control mode and operating an engine in a torque control mode while input clutches of a transmission are open in response to a request to adapt an engine spark to engine torque relationship, the engine and the ISG positioned upstream of the input clutches;
- adjusting values of the engine spark to engine torque relationship;
- and
- operating the engine responsive to the adjusted values of the engine spark to torque relationship.
1 more element
A system, comprising:
- an engine;
- an integrated starter/generator coupled to the engine;
- a transmission including a first input clutch, a second input clutch, a first input shaft and a second input shaft, a first layshaft selectively coupled to the first input shaft, a second layshaft selectively coupled to the second input shaft, a plurality of gears, and an output shaft coupled to the first and second layshafts;
- a rear drive unit including a rear axle and an electric machine coupled to the dual clutch transmission via a driveshaft;
- and
- a controller including executable instructions stored in non-transitory memory to propel a vehicle via the rear drive unit while adjusting values of an engine spark to engine torque relationship, and instructions to operate then engine according to the adjusted values of the engine spark to engine torque relationship.
3 more elements
Dependencies are inferred from the claim text.