Method and device for activating an electric vacuum pump for a brake booster of a vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 16, 2018
Grant Date -
Feb 5, 2015
app pub date -
Sep 18, 2012
filing date -
Nov 15, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Described are a method and a device for activating an electric vacuum pump for a brake booster of a vehicle. The brake booster is supplied with a vacuum from a vacuum reservoir. The vacuum pump is designed to increase the vacuum in the vacuum reservoir as soon as the vacuum drops below a predefinable switch-on threshold. In order to avoid unnecessarily frequent switching on of the vacuum pump, which may irritate the driver, an expected decrease of the vacuum in the vacuum reservoir as a result of an instantaneous braking operation is estimated and the switch-on threshold of the vacuum pump is temporarily reduced if the vacuum instantaneously prevailing in the vacuum reservoir minus the estimated vacuum decrease is greater than a predetermined adjustment point vacuum, below which the brake booster can no longer act in a sufficiently boosting manner.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2012 Application Filing Year
- B60T Class
- 686 Applications Filed
- 614 Patents Issued To-Date
- 89.51 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- B60T Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 16, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 16, 2029 |
