F02D 41/064
At cold start
Official title: {at cold start (F02D41/067 takes precedence)}
F02D41/064 (At cold start) appears on 1,028 US grants and 934 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,028
- Published applications
- 934
- Assignees
- 236
- Inventors
- 2,075
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 9 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 8 | 4 |
| 2002 | 9 | 25 |
| 2003 | 30 | 36 |
| 2004 | 35 | 34 |
| 2005 | 31 | 24 |
| 2006 | 30 | 27 |
| 2007 | 30 | 22 |
| 2008 | 16 | 26 |
| 2009 | 14 | 34 |
| 2010 | 27 | 41 |
| 2011 | 26 | 47 |
| 2012 | 39 | 32 |
| 2013 | 31 | 41 |
| 2014 | 33 | 47 |
| 2015 | 45 | 55 |
| 2016 | 36 | 56 |
| 2017 | 56 | 58 |
| 2018 | 60 | 71 |
| 2019 | 67 | 65 |
| 2020 | 62 | 39 |
| 2021 | 61 | 45 |
| 2022 | 61 | 37 |
| 2023 | 44 | 23 |
| 2024 | 27 | 9 |
| 2025 | 18 | 22 |
| 2026 | 12 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for migitating cold start emissions by managing turbocharger turbine speed29 Sep 2026US 12,747,710 B2GM Global Technology Operations LLC
- System and method for operating an engine11 Aug 2026US 12,704,098 B2Ford Global Technologies, LLC
- Engine control system for intake valve opening timing during cold start11 Aug 2026US 12,704,099 B2Cummins Power Generation Inc.
- Method and apparatus for detecting the operation of an engine-independent auxiliary heater and for diagnosing a coolant temperature of a motor vehicle4 Aug 2026US 12,697,855 B2Volkswagen Aktiengesellschaft
- Method for starting a power system14 Jul 2026US 12,680,522 B2Volvo Truck Corporation
- Rapid exhaust catalyst heating using a glow plug27 Aug 2026US 2026/0251081 A1Saudi Arabian Oil Company
- Engine control device, vehicle, engine control program, and engine control method13 Aug 2026US 2026/0235087 A1Isuzu Motors Limited
- Temperature-controllable glow plug assisted compression ignition methanol engine and control method thereof23 Jul 2026US 2026/0210322 A1Taiyuan University of Technology
- Internal combustion engine9 Jul 2026US 2026/0194024 A1Toyota Jidosha Kabushiki Kaisha
- Vehicle controller and vehicle control method18 Jun 2026US 2026/0168454 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- System and method for engine starting160US 7,159,568 B1Ford Global Technologies, LLC · 2007
- Fuel injection system and method118US 6,959,693 B2Toyota Jidosha Kabushiki Kaisha · 2005
- Engine system and method with cylinder deactivation106US 6,978,204 B2Ford Global Technologies, LLC · 2005
- Engine output control system and method73US 7,640,914 B2Ford Global Technologies, LLC · 2010
- Cold start fuel control system71US 5,482,023 AHitachi America, Ltd., Research and Development Division · 1996