F02D 2250/21
During a transition between engine operation modes or states
Official title: during a transition between engine operation modes or states
F02D2250/21 (During a transition between engine operation modes or states) appears on 580 US grants and 520 published applications in this corpus.
Search patents in F02D- Granted patents
- 580
- Published applications
- 520
- Assignees
- 128
- Inventors
- 1,273
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 7 | 0 |
| 2000 | 7 | 0 |
| 2001 | 13 | 7 |
| 2002 | 18 | 19 |
| 2003 | 17 | 24 |
| 2004 | 29 | 34 |
| 2005 | 29 | 23 |
| 2006 | 25 | 18 |
| 2007 | 19 | 27 |
| 2008 | 21 | 27 |
| 2009 | 16 | 42 |
| 2010 | 19 | 30 |
| 2011 | 26 | 20 |
| 2012 | 25 | 22 |
| 2013 | 28 | 19 |
| 2014 | 23 | 17 |
| 2015 | 25 | 19 |
| 2016 | 16 | 30 |
| 2017 | 22 | 24 |
| 2018 | 27 | 32 |
| 2019 | 31 | 21 |
| 2020 | 27 | 30 |
| 2021 | 26 | 10 |
| 2022 | 18 | 9 |
| 2023 | 9 | 7 |
| 2024 | 8 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Control method of air fuel ratio for hybrid vehicle and control device of air fuel ratio for hybrid vehicle28 Apr 2026US 12,612,032 B2Nissan Motor Co., Ltd.
- Method to perform rebreathe mode transitions17 Feb 2026US 12,553,398 B2Saudi Arabian Oil Company
- Predictive EGR control method and terminal device, and storage medium28 Jan 2025US 12,209,546 B2Xiamen Yaxon Zhilian Technology Co., Ltd.
- Multimode engines with advanced valvetrain systems and methods of use19 Nov 2024US 12,146,447 B1Hyundai Motor Company
- Control system and method for controlling operation of an internal combustion engine22 Oct 2024US 12,123,364 B2Jaguar Land Rover Limited
- Control apparatus for vehicle1 Oct 2026US 2026/0298163 A1Toyota Jidosha Kabushiki Kaisha
- Alternator controls for quick engine torque modulation23 Jul 2026US 2026/0210306 A1Fca US LLC
- Method for defining cylinder torque demand during transitions in skip-fire engine operation14 May 2026US 2026/0132748 A1DAF Trucks N. V.
- Hydrogen combustion engine torque control5 Mar 2026US 2026/0063098 A1DAF Trucks N. V.
- Method to perform rebreathe mode transitions1 Jan 2026US 2026/0002481 A1Aramco Services Company
Most cited
By later US patents
- Method and arrangement for controlling a vehicle112US 5,692,471 ARobert Bosch GmbH · 1997
- System and method for controlling the transient torque output of a variable displacement internal combustion engine93US 5,374,224 AFord Motor Company · 1994
- Torque estimator for engine RPM and torque control83US 6,704,638 B2General Motors Corporation · 2004
- Control system for controlling output torque of internal combustion engine80US 5,101,786 ANippondenso Co., Ltd. · 1992
- System and method for controlling the transient torque output of a variable displacement internal combustion engine77US 5,437,253 AFord Motor Company · 1995