VEHICLE CONTROL APPARATUS

• US 20180201253A1
• Filed: 12/29/2017
• Published: 07/19/2018
• Est. Priority Date: 01/18/2017
• Status: Abandoned Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: FUJITA, Kazuya
• Application Number:
  US15/858,657
• Publication Number:
  US 20180201253A1
• Time in Patent Office: Days
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 2510/0652 Speed change rate
• CPC Class Codes: B60W 2510/0685 Engine crank angle
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: B60W 30/192 Mitigating problems related to power-up or power-down of the driveline, e.g. start-up of a cold engine
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Abstract

A control apparatus for a vehicle with an engine, and an electric motor adjusting a torque to be transmitted to drive wheels, the control apparatus including: a control portion configured to control the electric motor to generate a drive-wheel-torque restricting torque for restricting a torque to be applied to the drive wheels upon initial explosion of the engine as a result of cranking of the engine to start the engine, when a predetermined length of delay time has passed after a point of time prior to a moment of the initial explosion of the engine. A time setting portion configured to set the predetermined length of delay time on the basis of an operating speed of the engine during cranking of the engine, and one of a pre-starting crank angle of the engine at rest and a rate of rise of the operating speed of the engine during its cranking.

Claims

1. A control apparatus for a vehicle provided with an engine, and an electric motor adjusting a torque to be transmitted to drive wheels, said control apparatus comprising:

a control portion configured to control the electric motor so as to generate a drive-wheel-torque restricting torque for restricting a torque to be applied to the drive wheels upon initial explosion of the engine as a result of cranking of the engine to start the engine, when a predetermined length of delay time has passed after a predetermined point of time prior to a moment of the initial explosion of the engine; and

a time setting portion configured to set the predetermined length of delay time on the basis of an operating speed of the engine during cranking of the engine, and one of a pre-starting crank angle of the engine at rest and a rate of rise of the operating speed of the engine during its cranking.

2. The control apparatus according to claim 1, wherein said predetermined point of time is a moment of generation of a control command to initiate fuel injection into the engine, and the time setting portion sets the length of delay time on the basis of the operating speed of the engine at the moment of generation of said control command and the pre-starting crank angle of the engine at rest.

3. The control apparatus according to claim 1, wherein said predetermined point of time is a moment of generation of a control command to initiate fuel injection into the engine, or a point of time at which a predetermined time has passed after the moment of generation of said control command, and the time setting portion sets the length of delay time on the basis of the operating speed of the engine at the moment of generation of said control command, and the rate of rise of the operating speed of the engine during a time period in the process of cranking of the engine, the time period starting from the moment of generation of the control command and having a length of the predetermined time.