F02D 41/0087
Selective cylinder activation, i.e. partial cylinder operation
Official title: {Selective cylinder activation, i.e. partial cylinder operation (deceleration cut-off F02D41/123)}
F02D41/0087 (Selective cylinder activation, i.e. partial cylinder operation) appears on 1,777 US grants and 1,560 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,777
- Published applications
- 1,560
- Assignees
- 247
- Inventors
- 2,584
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 13 | 0 |
| 1984 | 18 | 0 |
| 1985 | 12 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 19 | 0 |
| 1996 | 23 | 0 |
| 1997 | 12 | 0 |
| 1998 | 26 | 0 |
| 1999 | 20 | 0 |
| 2000 | 11 | 0 |
| 2001 | 21 | 7 |
| 2002 | 26 | 37 |
| 2003 | 34 | 54 |
| 2004 | 51 | 53 |
| 2005 | 54 | 62 |
| 2006 | 56 | 32 |
| 2007 | 36 | 44 |
| 2008 | 33 | 44 |
| 2009 | 37 | 51 |
| 2010 | 33 | 48 |
| 2011 | 39 | 59 |
| 2012 | 41 | 37 |
| 2013 | 35 | 48 |
| 2014 | 48 | 76 |
| 2015 | 49 | 81 |
| 2016 | 75 | 86 |
| 2017 | 106 | 128 |
| 2018 | 110 | 122 |
| 2019 | 141 | 102 |
| 2020 | 113 | 92 |
| 2021 | 98 | 75 |
| 2022 | 112 | 111 |
| 2023 | 86 | 44 |
| 2024 | 50 | 38 |
| 2025 | 32 | 12 |
| 2026 | 9 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for operating an engine11 Aug 2026US 12,704,098 B2Ford Global Technologies, LLC
- Methods and systems for individual cylinder fuel-air ratio adaptation23 Jun 2026US 12,662,974 B2Ford Global Technologies, LLC
- Fuel bypass system for gaseous-fueled engine12 May 2026US 12,624,655 B2Generac Power Systems, Inc.
- Cold start control systems and methods24 Mar 2026US 12,583,437 B2GM Global Technology Operations LLC
- Method of fuel injector management based on cylinder knock detection and vehicle including the same17 Mar 2026US 12,577,921 B1GM Global Technology Operations LLC
- Intake temperature management systems for compression ignition of small molecule fuels10 Sep 2026US 2026/0266249 A1
- Method of controlling injection in a hydrogen internal combustion engine20 Aug 2026US 2026/0243207 A1Phinia Delphi Luxembourg Sarl
- Method for synchronizing an internal combustion engine on the basis of data from signals representative of air pressure in cylinders20 Aug 2026US 2026/0243208 A1Schaeffler Technologies AG & Co. KG
- 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 system for vehicle13 Aug 2026US 2026/0235085 A1Cummins Power Generation Inc.
Most cited
By later US patents
- Internal combustion engine control for improved fuel efficiency214US 8,099,224 B2Tula Technology, Inc. · 2012
- Internal combustion engine control for improved fuel efficiency208US 7,577,511 B1Tula Technology, Inc. · 2009
- System for controllably disabling cylinders in an internal combustion engine206US 6,619,258 B2Delphi Technologies, Inc. · 2003
- Skip-cycle strategies for four cycle engine202US 5,377,631 AFord Motor Company · 1995
- Process and apparatus for intermittent control of a cyclically operating internal combustion engine201US 4,509,488 ADaimler-Benz Aktiengesellschaft · 1985