VEHICLE TRAVEL CONTROLLER

摘要

A running control device of a vehicle executes a normal running mode with an engine coupled to drive wheels, a first inertia running mode with the engine stopped during running and an engine brake force reduced as compared to the normal running mode, and a second inertia running mode with the engine rotating during running and the engine brake force reduced as compared to the normal running mode. A determining portion determines a necessity of a brake negative pressure during the first or second inertia running mode. The necessity of the brake negative pressure is a condition for returning from the first inertia running mode and the second inertia running mode to the normal running mode. An upper limit value of the necessity of the brake negative pressure for returning from the first inertia running mode is smaller than that for returning from the second inertia running mode.

主权项

1. A running control device of a vehicle including an engine and a brake booster amplifying a brake force by using a brake negative pressure generated by rotation of the engine, the running control device of a vehicle executing a normal running mode with the engine coupled to drive wheels, a first inertia running mode with the engine stopped during running and an engine brake force reduced as compared to the normal running mode, and a second inertia running mode with the engine kept rotating during running and the engine brake force reduced as compared to the normal running mode, the running control device of a vehicle comprising a determining portion configured to determine a necessity of the brake negative pressure during the first or second inertia running mode, the necessity of the brake negative pressure being included as at least one of conditions for returning from the first inertia running mode and the second inertia running mode to the normal running mode,
the running control device of a vehicle having an upper limit value of the necessity of the brake negative pressure for returning from the first inertia running mode set smaller than an upper limit value of the necessity of the brake negative pressure for returning from the second inertia running mode.