Apparatus for controlling negative pressure for a brake booster in a diesel engine
US5846164A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved apparatus for controlling brake force of a vehicle is disclosed. A throttle valve is closed for generating the negative pressure that is supplied to a brake booster. The brake booster is actuated to increase brake force acting on the vehicle when a difference between air pressure and the negative pressure is smaller than a predetermined magnitude. An electric control unit (ECU) actuates the throttle valve to increase the absolute magnitude negative pressure when the ECU determines the differential pressure is smaller than the predetermined magnitude. The ECU corrects the magnitude of the negative pressure with a mapped value based on the computed magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.