Methods and systems for launching a vehicle

摘要

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.

主权项

1. 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.