F02D 41/1489
Replacing of the control value by a constant
Official title: {Replacing of the control value by a constant}
F02D41/1489 (Replacing of the control value by a constant) appears on 51 US grants and 9 published applications in this corpus.
Search patents in F02D- Granted patents
- 51
- Published applications
- 9
- Assignees
- 18
- Inventors
- 99
- Latest grant
- 1 Nov 2016
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 4 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method and apparatus to operate internal combustion engine employing an intake air compressor1 Nov 2016US 9,482,147 B2GM Global Technology Operations LLC
- Exhaust gas purification system17 Mar 2015US 8,978,365 B2Isuzu Motors Limited
- Combustion air-fuel ratio control system for an internal combustion engine26 May 2009US 7,536,852 B2Nissan Motor Co., Ltd.
- Method and device for controlling a piezo actuator5 May 2009US 7,528,524 B2Robert Bosch GmbH
- Engine air-fuel ratio control system20 Feb 2007US 7,181,331 B2Nissan Motor Co., Ltd.
- Method and apparatus to operate internal combustion engine employing an intake air compressor27 Nov 2014US 2014/0345255 A1GM Global Technology Operations LLC
- Exhaust gas purification system21 Mar 2013US 2013/0067896 A1Isuzu Motors Limited
- Combustion air-fuel ratio control system for an internal combustion engine25 Jan 2007US 2007/0017213 A1Nissan Motor Co., Ltd.
- Air-fuel ratio feedback control apparatus for engines13 Jul 2006US 2006/0150962 A1Honda Motor Co., Ltd.
- Method and device for controlling a piezo actuator13 Jul 2006US 2006/0152879 A1Robert Bosch GmbH
Most cited
By later US patents
- Closed-loop air-fuel mixture control apparatus for internal combustion engines with means for minimizing voltage swing during transient engine operating conditions36US 4,089,313 ANissan Motor Co., Ltd. · 1978
- Control system for normalizing the air/fuel ratio in a fuel injection system33US 3,990,411 AThe Bendix Corporation · 1976
- Closed loop fuel control using air injection in open loop modes30US 3,986,352 AGeneral Motors Corporation · 1976
- Air-fuel ratio controlling method and apparatus therefor29US 4,348,728 ANippondenso Co., Ltd. · 1982
- Air-fuel ratio control apparatus28US 4,132,199 AHitachi, Ltd. · 1979