Start and stop control for a vehicle

Patent metadata

Field	Value
Publication number	US-11248549-B2
Application number	US-202016853725-A
Country	US
Kind code	B2
Filing date	Apr 20, 2020
Priority date	Apr 22, 2019
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A vehicle which can improve fuel consumption without a driver feeling uncomfortable is provided. The vehicle includes: a hydraulic pressure sensor for acquiring a brake torque value which increases in accordance with a stepping-in amount of a brake pedal by the driver, and an ECU which automatically stops an engine after a basic time has elapsed since a basic condition is satisfied and then automatically restarts the engine. The ECU automatically stops the engine before the basic time elapses, when an increment of the brake torque value from a reference value after the basic condition is satisfied is equal to or greater than an additional stepping judgment value, and a shortened time shorter than the basic time has elapsed.

First claim

What is claimed is:

1. A vehicle, comprising:
an operation parameter acquisition part for acquiring an operation parameter value which increases in accordance with an operation amount of a brake; and
an automatic stop-start control device which automatically stops an internal combustion engine after a basic time has elapsed since a basic condition is satisfied, and then automatically restarts the internal combustion engine, wherein
the automatic stop-start control device automatically stops the internal combustion engine after a shortened time has elapsed and before the basic time elapses when the operation parameter value has increased since the basic condition is satisfied, wherein
the basic condition comprises when the operation parameter value decreases and the vehicle is stopped or when an accelerator pedal of the vehicle is not stepped on,
the shortened time is shorter than the basic time.

2. The vehicle according to claim 1 , wherein after the basic condition is satisfied, a reference value is updated to be a minimum value of the operation parameter value after the basic condition is satisfied in a case when the operation parameter value is smaller than the operation parameter value when the basic condition is satisfied.

3. The vehicle according to claim 1 , wherein the automatic stop-start control device automatically stops the internal combustion engine before the basic time elapses, when an increment of the operation parameter value from a reference value after the basic condition is satisfied is equal to or greater than a threshold value and the shortened time has elapsed since the basic condition is satisfied.

4. The vehicle according to claim 1 , wherein after the basic condition satisfied, the automatic stop-start control device sets the operation parameter value as a reference value and automatically stops the internal combustion engine in a case when an increment of the operation parameter value from the reference value is equal to or greater than a threshold value, the operation parameter value is equal to or greater than an automatic stop permission value that permits an automatic stop of the internal combustion engine, and the shortened time has elapsed since the basic condition is satisfied.

5. The vehicle according to claim 2 , wherein after the basic condition is satisfied, the automatic stop-start control device sets the operation parameter value as the reference value and automatically stops the internal combustion engine in a case when an increment of the operation parameter value from the reference value is equal to or greater than a threshold value, the operation parameter value is equal to or greater than an automatic stop permission value that permits an automatic stop of the internal combustion engine, and the shortened time has elapsed since the basic condition is satisfied.

Assignees

• Honda Motor Co Ltd

Inventors

• Moro Kosuke
• Hanada Kohei
• Ninomiya Hiroaki

Classifications

• F02D41/065

  at hot start or restart (F02D41/067 takes precedence) · CPC title

• F02N2200/102

  Brake pedal position · CPC title

• F02D41/2451

  characterised by what is learned or calibrated · CPC title

• F02D41/042 Primary

  for stopping the engine · CPC title

• F02N2300/2011

  Control involving a delay; Control involving a waiting period before engine stop or engine start · CPC title