F02D 19/0613
Switch-over from one fuel to another
Official title: {Switch-over from one fuel to another (F02D19/081 takes precedence)}
F02D19/0613 (Switch-over from one fuel to another) appears on 303 US grants and 323 published applications in this corpus.
Search patents in F02D- Granted patents
- 303
- Published applications
- 323
- Assignees
- 145
- Inventors
- 600
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 3 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 4 |
| 2006 | 3 | 5 |
| 2007 | 5 | 7 |
| 2008 | 2 | 8 |
| 2009 | 6 | 10 |
| 2010 | 10 | 15 |
| 2011 | 7 | 14 |
| 2012 | 8 | 21 |
| 2013 | 6 | 20 |
| 2014 | 13 | 22 |
| 2015 | 18 | 26 |
| 2016 | 24 | 25 |
| 2017 | 17 | 19 |
| 2018 | 21 | 10 |
| 2019 | 18 | 25 |
| 2020 | 20 | 15 |
| 2021 | 18 | 15 |
| 2022 | 20 | 12 |
| 2023 | 15 | 13 |
| 2024 | 10 | 12 |
| 2025 | 8 | 14 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual fuel selector switch8 Sep 2026US 12,729,655 B2Champion Power Equipment, Inc.
- Dual fuel selector switch1 Sep 2026US 12,723,549 B2Champion Power Equipment, Inc.
- Ammonia cracking for multi-fuel engines17 Feb 2026US 12,552,419 B2Cummins Power Generation Inc.
- Systems for a multi-fuel capable engine10 Feb 2026US 12,546,266 B2Transportation IP Holdings, LLC
- Systems and methods for at-cylinder fuel switching27 Jan 2026US 12,535,041 B2Caterpillar Inc.
- Ammonia cracking for multi-fuel engines4 Jun 2026US 2026/0152212 A1Cummins Power Generation Inc.
- System and method for controlling fuel substitution in a dual fuel engine system30 Apr 2026US 2026/0117716 A1Cummins Power Generation Inc.
- Engine system5 Feb 2026US 2026/0036094 A1Yanmar Holdings Co., Ltd.
- Multifunctional switch base assembly and control method thereof15 Jan 2026US 2026/0015981 A1Zhejiang Constant Power Machinery Co., Ltd.
- Dual fuel system with electric battery for power generation16 Oct 2025US 2025/0320837 A1RV Mobile Power, LLC
Most cited
By later US patents
- Dual fuel system for an internal combustion engine167US 9,212,643 B2Delia Ltd. · 2015
- Apparatus and method for providing an alternative fuel system for engines81US 5,092,305 AGas Research Institute · 1992
- Control system and method for a bi-fuel engine69US 6,543,423 B2Ford Global Technologies, LLC · 2003
- Control system and method for a bi-fuel engine69US 6,668,804 B2Ford Global Technologies, LLC · 2003
- Dual fuel supply system67US 4,502,453 AGeneral Motors Corporation · 1985