F02D 13/0249
Changing the valve timing only
Official title: {changing the valve timing only}
F02D13/0249 (Changing the valve timing only) appears on 245 US grants and 216 published applications in this corpus.
Search patents in F02D- Granted patents
- 245
- Published applications
- 216
- Assignees
- 90
- Inventors
- 497
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 5 | 5 |
| 2002 | 9 | 5 |
| 2003 | 10 | 8 |
| 2004 | 6 | 4 |
| 2005 | 4 | 4 |
| 2006 | 5 | 12 |
| 2007 | 7 | 10 |
| 2008 | 10 | 7 |
| 2009 | 6 | 10 |
| 2010 | 5 | 7 |
| 2011 | 5 | 7 |
| 2012 | 4 | 8 |
| 2013 | 10 | 9 |
| 2014 | 11 | 8 |
| 2015 | 7 | 10 |
| 2016 | 10 | 11 |
| 2017 | 7 | 15 |
| 2018 | 19 | 17 |
| 2019 | 11 | 13 |
| 2020 | 14 | 13 |
| 2021 | 11 | 7 |
| 2022 | 14 | 7 |
| 2023 | 10 | 6 |
| 2024 | 8 | 5 |
| 2025 | 4 | 4 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Controller for internal combustion engine30 Jun 2026US 12,669,079 B2Toyota Jidosha Kabushiki Kaisha
- Engine control systems and methods for starting an engine2 Dec 2025US 12,486,816 B2PACCAR Inc
- Engine and method of operating the same30 Sep 2025US 12,429,003 B2Alpha-Otto Technologies Inc.
- Method of controlling inlet valves and exhaust valves of an internal combustion engine, control arrangement, combustion engine, and vehicle29 Apr 2025US 12,286,937 B2Scania CV AB
- System and method for actuating engine valves including a recompression relief valve event8 Apr 2025US 12,270,322 B1Jacobs Vehicle Systems, Inc.
- Deactivation mechanism and associated valve events for divided exhaust boost (deb) engine23 Jul 2026US 2026/0210303 A1Aramco Services Company
- Engine, a method of operating an engine, and a controller12 Mar 2026US 2026/0071560 A1Cummins Inc.
- Controller for internal combustion engine15 Jan 2026US 2026/0015967 A1Toyota Jidosha Kabushiki Kaisha
- Engine and method of operating the same1 Jan 2026US 2026/0002480 A1Alpha-Otto Technologies Inc.
- System and method for actuating engine valves including a recompression relief valve event10 Apr 2025US 2025/0116213 A1Jacobs Vehicle Systems, Inc.
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Method of controlling reciprocating four-stroke internal combustion engines107US 4,700,684 AFEV Forschungsgesellschaft fur Energietechnik und Verbrennungsmotoren mbH · 1987
- System for controlling a valve mechanism for an internal combustion engine104US 5,398,502 AFuji Jukogyo Kabushiki Kaisha · 1995
- Internal combustion engine having solenoid-operated valves and control method97US 6,332,446 B1Toyota Jidosha Kabushiki Kaisha · 2001
- Variable valve timing control system80US 6,330,870 B1Denso Corporation · 2001