Back to results
US 2015/0105216 A1Published application
Methods and systems for launching a vehicle
AssigneeFord Global Technologies, LLC
InventorsDennis Craig Reed, Alex O'Connor Gibson, Jeffrey Allen Doering, Adam Nathan Banker, Seung-Hoon Lee
Life of this patent
Estimating the term…
Abstract
Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved.
Claims19
A driveline operating method, comprising:
- providing torque to a driveline via a driveline integrated starter/generator (DISG) in response to a desired torque;
- and
- starting an engine and idling the engine without providing engine torque to the driveline in response to a driver demand torque being within a threshold range of an engine cranking torque, the engine idling with spark timing more advanced than when the engine idles and providing engine torque to the driveline.
A driveline operating method, comprising:
- providing torque to a driveline via a driveline integrated starter/generator (DISG) in response to a driver demand torque;
- starting an engine and idling the engine without providing engine torque to the driveline via an open disconnect clutch in response to the driver demand torque being within a threshold range of an engine cranking torque;
- and
- accelerating the engine to DISG speed in response to the driver demand torque increasing to a threshold DISG torque, where the engine is idled at a sailing mode idle speed that is lower than when the engine is operated at a base idle speed and provides engine torque to the driveline via the disconnect clutch being closed.
1 more element
A vehicle system, comprising:
- an engine;
- a dual mass flywheel including a first side mechanically coupled to the engine;
- a driveline disconnect clutch mechanically including a first side coupled to a second side of the dual mass flywheel;
- a driveline integrated starter/generator (DISG) including a first side coupled to a second side of the driveline disconnect clutch;
- a transmission selectively coupled to the engine via the driveline disconnect clutch;
- and
- a controller including executable instructions stored in non-transitory memory to accelerate a vehicle from zero speed via the DISG without starting the engine, instructions to start the engine in response to a desired torque exceeding a threshold engine cranking torque;
- and instructions to increase engine speed from to a speed synchronous with DISG speed, slip a torque converter clutch, and close the driveline disconnect clutch.
5 more elements
Dependencies are inferred from the claim text.