F02B 23/101
The injector being placed on or close to the cylinder centre axis
Official title: {the injector being placed on or close to the cylinder centre axis, e.g. with mixture formation using spray guided concepts}
F02B23/101 (The injector being placed on or close to the cylinder centre axis) appears on 478 US grants and 365 published applications in this corpus.
Search patents in F02B- Granted patents
- 478
- Published applications
- 365
- Assignees
- 139
- Inventors
- 844
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 18 | 0 |
| 1999 | 21 | 0 |
| 2000 | 30 | 0 |
| 2001 | 18 | 12 |
| 2002 | 35 | 41 |
| 2003 | 36 | 19 |
| 2004 | 20 | 18 |
| 2005 | 22 | 18 |
| 2006 | 18 | 19 |
| 2007 | 12 | 23 |
| 2008 | 22 | 20 |
| 2009 | 10 | 20 |
| 2010 | 16 | 8 |
| 2011 | 5 | 4 |
| 2012 | 7 | 7 |
| 2013 | 9 | 6 |
| 2014 | 3 | 14 |
| 2015 | 8 | 16 |
| 2016 | 12 | 20 |
| 2017 | 13 | 9 |
| 2018 | 12 | 13 |
| 2019 | 16 | 22 |
| 2020 | 19 | 16 |
| 2021 | 16 | 12 |
| 2022 | 9 | 2 |
| 2023 | 3 | 4 |
| 2024 | 4 | 11 |
| 2025 | 4 | 6 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines12 May 2026US 12,624,654 B2Saudi Arabian Oil Company
- Spray guided stratification for fueling a passive pre-chamber3 Mar 2026US 12,565,849 B2Saudi Arabian Oil Company
- Internal combustion engine system10 Feb 2026US 12,546,263 B2Volvo Truck Corporation
- Internal combustion engine system30 Dec 2025US 12,510,035 B2Volvo Truck Corporation
- Combustion chamber for high performance H2 direct injection engine2 Sep 2025US 12,404,802 B2Saudi Arabian Oil Company
- Engine and operating strategy augmenting tumble flow to increase fuel-air mixing30 Jul 2026US 2026/0218671 A1Caterpillar Inc.
- Wall-guided spark assistance for cold operations in gasoline compression ignition engines16 Jul 2026US 2026/0201828 A1Aramco Services Company
- Gaseous fuel combustion system and method utilizing a piston reentrant feature for hastened fuel-air mixing16 Jul 2026US 2026/0201829 A1Caterpillar Inc.
- Gaseous fuel engine system and method utilizing scalloped piston for hastened fuel-air mixing2 Jul 2026US 2026/0185496 A1Caterpillar Inc.
- Multi-composition thermal management coating systems for combustion chamber components26 Feb 2026US 2026/0055714 A1Cummins Inc.
Most cited
By later US patents
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980
- Compression autoignition gasoline engine114US 6,336,436 B12002
- Ignition system employing plasma spray90US 4,364,342 AFord Motor Company · 1982
- Method of controlling internal combustion engine81US 6,039,026 AHitachi, Ltd. · 2000
- Flame incubating and propagating apparatus for a fuel combustion system67US 4,721,081 ACaterpillar Inc. · 1988