F02B 23/10
With separate admission of air and fuel into cylinder
Official title: with separate admission of air and fuel into cylinder
F02B23/10 (With separate admission of air and fuel into cylinder) appears on 1,096 US grants and 887 published applications in this corpus.
Search patents in F02B- Granted patents
- 1,096
- Published applications
- 887
- Assignees
- 237
- Inventors
- 1,741
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 10 | 0 |
| 1993 | 15 | 0 |
| 1994 | 11 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 32 | 0 |
| 1999 | 41 | 0 |
| 2000 | 57 | 0 |
| 2001 | 44 | 18 |
| 2002 | 56 | 64 |
| 2003 | 67 | 44 |
| 2004 | 49 | 55 |
| 2005 | 46 | 40 |
| 2006 | 45 | 50 |
| 2007 | 38 | 52 |
| 2008 | 51 | 45 |
| 2009 | 23 | 57 |
| 2010 | 41 | 28 |
| 2011 | 27 | 22 |
| 2012 | 26 | 28 |
| 2013 | 25 | 26 |
| 2014 | 18 | 30 |
| 2015 | 22 | 37 |
| 2016 | 28 | 46 |
| 2017 | 34 | 30 |
| 2018 | 34 | 31 |
| 2019 | 30 | 46 |
| 2020 | 46 | 41 |
| 2021 | 40 | 33 |
| 2022 | 30 | 14 |
| 2023 | 16 | 14 |
| 2024 | 12 | 18 |
| 2025 | 8 | 11 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02B 23/104The injector being placed on a side position of the cylinder551
- F02B 23/101The injector being placed on or close to the cylinder centre axis478
- F02B 2023/106Tumble flow, i.e. the axis of rotation of the main charge flowIndexing code232
- F02B 2023/108Swirl flow, i.e. the axis of rotation of the main charge flowIndexing code229
- F02B 2023/103The injector having a multi-hole nozzle for generating multiple spraysIndexing code129
- F02B 2023/102The spark plug being placed offset the cylinder centre axisIndexing code119
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
- Engine having hotspot fuel igniter and piston and methodology using same3 Mar 2026US 12,565,865 B2Caterpillar Inc.
- Internal combustion engine system10 Feb 2026US 12,546,263 B2Volvo Truck Corporation
- Internal combustion engine system30 Dec 2025US 12,510,035 B2Volvo Truck Corporation
- 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.
- Diagnostic method and diagnostic device for gas flow control valve of internal combustion engine12 Mar 2026US 2026/0071585 A1
Most cited
By later US patents
- System and method for engine starting160US 7,159,568 B1Ford Global Technologies, LLC · 2007
- Optimized fuel management system for direct injection ethanol enhancement of gasoline engines129US 7,225,787 B2Massachusetts Institute of Technology · 2007
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980
- Compression autoignition gasoline engine114US 6,336,436 B12002
- In-cylinder direct-injection spark-ignition engine98US 6,138,639 ANissan Motor Co., Ltd. · 2000