F02D 13/02
During engine operation
Official title: during engine operation
F02D13/02 (During engine operation) appears on 5,012 US grants and 4,520 published applications in this corpus.
Search patents in F02D- Granted patents
- 5,012
- Published applications
- 4,520
- Assignees
- 547
- Inventors
- 6,089
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 4 | 0 |
| 1978 | 9 | 0 |
| 1979 | 13 | 0 |
| 1980 | 16 | 0 |
| 1981 | 10 | 0 |
| 1982 | 12 | 0 |
| 1983 | 11 | 0 |
| 1984 | 12 | 0 |
| 1985 | 20 | 0 |
| 1986 | 11 | 0 |
| 1987 | 14 | 0 |
| 1988 | 23 | 0 |
| 1989 | 16 | 0 |
| 1990 | 33 | 0 |
| 1991 | 39 | 0 |
| 1992 | 32 | 0 |
| 1993 | 36 | 0 |
| 1994 | 23 | 0 |
| 1995 | 37 | 0 |
| 1996 | 48 | 0 |
| 1997 | 54 | 0 |
| 1998 | 64 | 0 |
| 1999 | 62 | 0 |
| 2000 | 56 | 0 |
| 2001 | 116 | 46 |
| 2002 | 129 | 140 |
| 2003 | 141 | 146 |
| 2004 | 141 | 175 |
| 2005 | 152 | 189 |
| 2006 | 207 | 188 |
| 2007 | 172 | 187 |
| 2008 | 162 | 211 |
| 2009 | 126 | 243 |
| 2010 | 175 | 223 |
| 2011 | 154 | 178 |
| 2012 | 167 | 186 |
| 2013 | 162 | 177 |
| 2014 | 159 | 244 |
| 2015 | 204 | 233 |
| 2016 | 217 | 231 |
| 2017 | 219 | 276 |
| 2018 | 257 | 259 |
| 2019 | 260 | 236 |
| 2020 | 288 | 219 |
| 2021 | 230 | 157 |
| 2022 | 177 | 142 |
| 2023 | 144 | 98 |
| 2024 | 97 | 55 |
| 2025 | 68 | 51 |
| 2026 | 26 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02D 13/0203Variable control of intake and exhaust valves2,230
- F02D 13/0223Variable control of the intake valves only1,154
- F02D 13/0261Controlling the valve overlap1,128
- F02D 13/06Cutting-out cylinders777
- F02D 13/04Using engine as brake500
- F02D 13/0242Variable control of the exhaust valves only490
- F02D 13/0253Fully variable control of valve lift and timing using camless actuation systems444
- F02D 13/0269Controlling the valves to perform a miller-atkinson cycle369
All 14 subgroupsShow fewer
- F02D 13/0257Independent control of two or more intake or exhaust valves respectively, i.e.357
- F02D 13/028For two-stroke engines255
- F02D 2013/0292In the start-up phaseIndexing code244
- F02D 13/0273Multiple actuations of a valve within an engine cycle206
- F02D 13/0276Actuation of an additional valve for a special application192
- F02D 2013/0296Changing the valve lift onlyIndexing code36
Recent patents
- Varied intake valve operation for improved transient response in gaseous fuel engine22 Sep 2026US 12,742,427 B1Caterpillar Inc.
- Engine control system for intake valve opening timing during cold start11 Aug 2026US 12,704,099 B2Cummins Power Generation Inc.
- Work vehicle compression ignition power system having thermally stratified engine combustion chambers21 Jul 2026US 12,687,133 B2Deere & Company
- Cold start catalyst bypass system14 Jul 2026US 12,680,486 B1Fca US LLC
- Systems and methods for combusting unconventional fuel chemistries in a diesel engine architecture7 Jul 2026US 12,674,409 B2Climate Energy Investments, LLC
- Varied intake valve operation for improved transient response in gaseous fuel engine24 Sep 2026US 2026/0286908 A1Caterpillar Inc.
- Method to shut down an internal combustion engine27 Aug 2026US 2026/0251095 A1Volvo Truck Corporation
- Method for Controlling an Internal Combustion Engine, Control Device, Internal Combustion Engine, and Motor Vehicle20 Aug 2026US 2026/0243205 A1Bayerische Motoren Werke Aktiengesellschaft
- System and method of fuel injection mode transitions for an internal combustion engine during cylinder activation and deactivation20 Aug 2026US 2026/0243214 A1GM Global Technology Operations LLC
- Engine control device, vehicle, engine control program, and engine control method13 Aug 2026US 2026/0235087 A1Isuzu Motors Limited
Most cited
By later US patents
- Skip-cycle strategies for four cycle engine202US 5,377,631 AFord Motor Company · 1995
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Vehicle braking control190US 7,930,087 B2Ford Global Technologies, LLC · 2011
- Hybrid vehicle employing parallel hybrid system, using both internal combustion engine and electric motor for propulsion182US 6,026,921 ANissan Motor Co., Ltd. · 2000
- Valve selection for an engine operating in a multi-stroke cylinder mode179US 7,063,062 B2Ford Global Technologies, LLC · 2006