F02N 19/004
Aiding engine start by using decompression means or variable valve actuation
Official title: {Aiding engine start by using decompression means or variable valve actuation}
F02N19/004 (Aiding engine start by using decompression means or variable valve actuation) appears on 233 US grants and 202 published applications in this corpus.
Search patents in F02N- Granted patents
- 233
- Published applications
- 202
- Assignees
- 90
- Inventors
- 525
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 2 |
| 2002 | 4 | 7 |
| 2003 | 5 | 9 |
| 2004 | 8 | 7 |
| 2005 | 6 | 13 |
| 2006 | 11 | 18 |
| 2007 | 11 | 11 |
| 2008 | 13 | 7 |
| 2009 | 4 | 9 |
| 2010 | 6 | 8 |
| 2011 | 3 | 4 |
| 2012 | 7 | 3 |
| 2013 | 6 | 9 |
| 2014 | 7 | 10 |
| 2015 | 11 | 6 |
| 2016 | 5 | 8 |
| 2017 | 4 | 11 |
| 2018 | 13 | 10 |
| 2019 | 9 | 15 |
| 2020 | 17 | 18 |
| 2021 | 16 | 8 |
| 2022 | 7 | 5 |
| 2023 | 4 | 0 |
| 2024 | 3 | 1 |
| 2025 | 5 | 3 |
By publication year. Applications have been published since 2001.
Recent patents
- Engine control systems and methods for starting an engine2 Dec 2025US 12,486,816 B2PACCAR Inc
- Variable exhaust control system11 Nov 2025US 12,467,399 B2
- Apparatuses, methods, and systems including engine high-speed starting capability21 Oct 2025US 12,448,929 B2Cummins Inc.
- Reciprocating piston engine, and method for operating a reciprocating piston engine29 Jul 2025US 12,372,036 B2Schaeffler Technologies AG & Co. KG
- Control unit and method for operating a hybrid drive having an internal combustion engine with reduced drag torque11 Feb 2025US 12,221,933 B2Bayerische Motoren Werke Aktiengesellschaft
- Reciprocating piston engine, and method for operating a reciprocating piston engine15 May 2025US 2025/0154908 A1Schaeffler Technologies AG & Co. KG
- Apparatuses, methods, and systems including engine high-speed starting capability3 Apr 2025US 2025/0109716 A1Cummins Inc.
- Engine control systems and methods for starting an engine13 Mar 2025US 2025/0084802 A1PACCAR Inc
- Internal combustion engine27 Jun 2024US 2024/0209824 A1Kawasaki Motors, Ltd.
- Engine control apparatus6 Oct 2022US 2022/0316368 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Control apparatus for variable-cylinder engine, and control apparatus for vehicle150US 6,629,024 B2Toyota Jidosha Kabushiki Kaisha · 2003
- Vehicle management computer113US 5,284,116 ANorth American Philips Corporation · 1994
- Vehicle management computer106US 5,123,397 ANorth American Philips Corporation · 1992
- Process for controlling a multiple cylinder internal combustion engine in the cold start and warming up phases95US 5,930,992 AFEV Motorentechnik GmbH & Co. Kommanditgesellschaft · 1999
- System for regulating valve timing of internal combustion engine93US 5,924,395 AToyota Jidosha Kabushiki Kaisha · 1999