F02D 41/3047
Said means being a secondary injection of fuel
Official title: {said means being a secondary injection of fuel}
F02D41/3047 (Said means being a secondary injection of fuel) appears on 162 US grants and 184 published applications in this corpus.
Search patents in F02D- Granted patents
- 162
- Published applications
- 184
- Assignees
- 68
- Inventors
- 368
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 6 |
| 2002 | 5 | 6 |
| 2003 | 10 | 5 |
| 2004 | 2 | 4 |
| 2005 | 4 | 3 |
| 2006 | 10 | 12 |
| 2007 | 6 | 6 |
| 2008 | 4 | 9 |
| 2009 | 3 | 4 |
| 2010 | 7 | 4 |
| 2011 | 0 | 2 |
| 2012 | 3 | 3 |
| 2013 | 4 | 8 |
| 2014 | 4 | 11 |
| 2015 | 6 | 14 |
| 2016 | 3 | 11 |
| 2017 | 7 | 5 |
| 2018 | 7 | 15 |
| 2019 | 10 | 19 |
| 2020 | 21 | 12 |
| 2021 | 21 | 13 |
| 2022 | 5 | 3 |
| 2023 | 9 | 5 |
| 2024 | 4 | 1 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual fuel engine combustion control strategy optimizing pilot shot quantities6 Jan 2026US 12,516,638 B2Caterpillar Inc.
- Engine system and gas fuel combustion method3 Dec 2024US 12,158,119 B2Yanmar Holdings Co., Ltd.
- Combustion control for ammonia fueled engine27 Aug 2024US 12,071,906 B2Woodward, Inc.
- Systems and method for controlling auto-ignition9 Apr 2024US 11,952,935 B2Transportation IP Holdings, LLC
- Methods and systems for multi-fuel engine20 Feb 2024US 11,905,877 B2Transportation IP Holdings, LLC
- Dual fuel engine combustion control strategy optimizing pilot shot quantities18 Sep 2025US 2025/0290458 A1Caterpillar Inc.
- Apparatus and method for managing autoignition in an in-cylinder injector and combustion chamber of an internal combustion engine29 May 2025US 2025/0172104 A1HPDI Technology Limited Partnership
- Engine system and gas fuel combustion method6 Feb 2025US 2025/0043744 A1Yanmar Holdings Co., Ltd.
- Engine system and gas fuel combustion method22 Feb 2024US 2024/0060456 A1Yanmar Holdings Co., Ltd.
- Multiple combustion mode engine with ammonia fuel and control method thereof13 Jul 2023US 2023/0220809 A1Tianjin University
Most cited
By later US patents
- Exhaust gas purification device for an internal combustion engine105US 5,732,554 AToyota Jidosha Kabushiki Kaisha · 1998
- Compression self-igniting gasoline engine67US 6,267,097 B1Nissan Motor Co., Ltd. · 2001
- System and method for auto-ignition of gasoline internal combustion engine62US 6,386,177 B2Nissan Motor Co., Ltd. · 2002
- Gas engine with electronically controlled ignition oil injection48US 5,887,566 AMAN B&W Diesel Aktiengesellschaft · 1999
- Method and apparatus for controlling combustion quality of a gaseous-fuelled internal combustion engine47US 7,325,529 B2Westport Power Inc. · 2008