F02D 13/0207
Changing valve lift or valve lift and timing
Official title: {changing valve lift or valve lift and timing}
F02D13/0207 (Changing valve lift or valve lift and timing) appears on 847 US grants and 805 published applications in this corpus.
Search patents in F02D- Granted patents
- 847
- Published applications
- 805
- Assignees
- 143
- Inventors
- 1,445
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 10 | 0 |
| 2001 | 10 | 8 |
| 2002 | 22 | 35 |
| 2003 | 25 | 28 |
| 2004 | 32 | 42 |
| 2005 | 31 | 45 |
| 2006 | 53 | 48 |
| 2007 | 49 | 47 |
| 2008 | 35 | 43 |
| 2009 | 18 | 49 |
| 2010 | 39 | 32 |
| 2011 | 40 | 30 |
| 2012 | 31 | 31 |
| 2013 | 29 | 26 |
| 2014 | 20 | 34 |
| 2015 | 30 | 45 |
| 2016 | 33 | 30 |
| 2017 | 41 | 54 |
| 2018 | 47 | 37 |
| 2019 | 47 | 32 |
| 2020 | 34 | 31 |
| 2021 | 31 | 33 |
| 2022 | 38 | 21 |
| 2023 | 23 | 13 |
| 2024 | 12 | 7 |
| 2025 | 6 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Engine control system including dual continuous variable valve duration device and GPF forced regeneration method using the engine control system7 Apr 2026US 12,595,757 B2Hyundai Motor Company
- Variable valve actuation controls for engines7 Apr 2026US 12,595,769 B2Cummins Inc.
- Oil pan for internal combustion engine3 Mar 2026US 12,565,852 B2Arctic Cat Inc.
- Systems and methods for bypassing a compromised engine cylinder2 Dec 2025US 12,486,814 B2Cummins Inc.
- Engine control system provided with dual continuously variable valve duration device and method of GPF forcible regeneration using the same4 Nov 2025US 12,460,588 B2Hyundai Motor Company
- Oil pan for internal combustion engine9 Jul 2026US 2026/0194004 A1Arctic Cat Inc.
- Engine control system including dual continuous variable valve duration device and gpf forced regeneration method using the engine control system22 May 2025US 2025/0163837 A1Hyundai Motor Company
- Engine control system provided with dual continuously variable valve duration device and method of gpf forcible regeneration using the same22 May 2025US 2025/0163859 A1Hyundai Motor Company
- System and method for actuating engine valves including a recompression relief valve event10 Apr 2025US 2025/0116213 A1Jacobs Vehicle Systems, Inc.
- Active method for cold start emissions reduction8 Aug 2024US 2024/0263597 A1Hyundai Motor Company
Most cited
By later US patents
- System and method for engine fuel blend control110US 7,287,492 B2Ford Global Technologies, LLC · 2007
- System for controlling a valve mechanism for an internal combustion engine104US 5,398,502 AFuji Jukogyo Kabushiki Kaisha · 1995
- Engine air-fuel control for an engine with valves that may be deactivated98US 7,032,581 B2Ford Global Technologies, LLC · 2006
- Purge system for ethanol direct injection plus gas port fuel injection93US 7,293,552 B2Ford Global Technologies, LLC · 2007
- Method of controlling internal combustion engine81US 6,039,026 AHitachi, Ltd. · 2000