F02D 31/003
For idle speed control
Official title: {for idle speed control}
F02D31/003 (For idle speed control) appears on 668 US grants and 235 published applications in this corpus.
Search patents in F02D- Granted patents
- 668
- Published applications
- 235
- Assignees
- 137
- Inventors
- 1,104
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 12 | 0 |
| 1983 | 33 | 0 |
| 1984 | 44 | 0 |
| 1985 | 36 | 0 |
| 1986 | 29 | 0 |
| 1987 | 26 | 0 |
| 1988 | 24 | 0 |
| 1989 | 23 | 0 |
| 1990 | 18 | 0 |
| 1991 | 25 | 0 |
| 1992 | 17 | 0 |
| 1993 | 22 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 9 | 0 |
| 1999 | 14 | 0 |
| 2000 | 21 | 0 |
| 2001 | 9 | 6 |
| 2002 | 14 | 14 |
| 2003 | 18 | 19 |
| 2004 | 21 | 20 |
| 2005 | 24 | 18 |
| 2006 | 21 | 12 |
| 2007 | 16 | 16 |
| 2008 | 11 | 17 |
| 2009 | 10 | 10 |
| 2010 | 7 | 7 |
| 2011 | 7 | 11 |
| 2012 | 2 | 10 |
| 2013 | 11 | 10 |
| 2014 | 8 | 6 |
| 2015 | 13 | 11 |
| 2016 | 7 | 12 |
| 2017 | 12 | 4 |
| 2018 | 12 | 4 |
| 2019 | 7 | 9 |
| 2020 | 6 | 4 |
| 2021 | 4 | 6 |
| 2022 | 2 | 0 |
| 2023 | 4 | 6 |
| 2024 | 3 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Torque compensation for air/fuel switching21 Oct 2025US 12,448,931 B2Toyota Jidosha Kabushiki Kaisha
- Marine propulsion device with forward/reverse shifting mechanism, and marine vessel7 Jan 2025US 12,187,399 B2Yamaha Katsudoki Kabushiki Kaisha
- Oil dilution inhibiting apparatus3 Dec 2024US 12,157,457 B2Subaru Corporation
- Method for operating an idling control device, an idling control device and a motor vehicle14 May 2024US 11,981,318 B2Vitesco Technologies GmbH
- Spark ignition type engine16 Jan 2024US 11,873,778 B2Kubota Corporation
- Torque compensation for air/fuel switching22 Aug 2024US 2024/0280063 A1Toyota Jidosha Kabushiki Kaisha
- Closed-loop control device for closed-loop control of a power assembly including an internal combustion engine and a generator having an operative drive connection to the internal combustion engine, closed-loop control arrangement having such a closed-loop control device, power assembly and method for closed-loop control of a power assembly11 Apr 2024US 2024/0120862 A1Rolls-Royce Solutions GmbH
- Oil dilution inhibiting apparatus14 Mar 2024US 2024/0083407 A1Subaru Corporation
- Marine propulsion device with forward/reverse shifting mechanism, and marine vessel24 Aug 2023US 2023/0264798 A1Yamaha Hatsudoki Kabushiki Kaisha
- Spark ignition type engine29 Jun 2023US 2023/0203996 A1Kubota Corporation
Most cited
By later US patents
- Method for rapid catalyst heating94US 6,568,177 B1Ford Global Technologies, LLC · 2003
- Closed loop fast idle control system84US 3,964,457 AThe Bendix Corporation · 1976
- Method of feedback controlling engine idle speed84US 4,492,195 ANissan Motor Co., Ltd. · 1985
- Method for controlling air-fuel ratio in internal combustion engine69US 6,012,428 AHonda Giken Kogyo Kabushiki Kaisha · 2000
- System and method for controlling air-fuel ratio in internal combustion engine68US 5,803,048 AHonda Giken Kogyo Kabushiki Kaisha · 1998