F02B 23/0696
W-piston bowl, i.e. the combustion space having a central projection pointing towards
Official title: {W-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder wall}
F02B23/0696 (W-piston bowl, i.e. the combustion space having a central projection pointing towards) appears on 245 US grants and 172 published applications in this corpus.
Search patents in F02B- Granted patents
- 245
- Published applications
- 172
- Assignees
- 119
- Inventors
- 532
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
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| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
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| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 2 | 0 |
| 1992 | 8 | 0 |
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| 1994 | 10 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 0 |
| 2002 | 4 | 3 |
| 2003 | 4 | 10 |
| 2004 | 6 | 9 |
| 2005 | 6 | 14 |
| 2006 | 8 | 6 |
| 2007 | 10 | 5 |
| 2008 | 3 | 3 |
| 2009 | 4 | 13 |
| 2010 | 4 | 10 |
| 2011 | 10 | 9 |
| 2012 | 3 | 5 |
| 2013 | 6 | 5 |
| 2014 | 9 | 7 |
| 2015 | 3 | 10 |
| 2016 | 4 | 16 |
| 2017 | 3 | 5 |
| 2018 | 7 | 9 |
| 2019 | 13 | 8 |
| 2020 | 7 | 7 |
| 2021 | 5 | 5 |
| 2022 | 5 | 3 |
| 2023 | 5 | 4 |
| 2024 | 2 | 1 |
| 2025 | 3 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Internal combustion engine system30 Dec 2025US 12,510,035 B2Volvo Truck Corporation
- Piston and an internal combustion engine system14 Oct 2025US 12,442,347 B2Volvo Truck Corporation
- Control method for combustion system, combustion system and engine14 Jan 2025US 12,196,151 B2Weichai Power Co., Ltd.
- Gaseous fuel reciprocating engine and operating methodology for reduced hydrogen flame speed16 Apr 2024US 11,959,414 B2Caterpillar Inc.
- Piston bowl geometry, cuff and top land interaction for reduced hydrocarbons, improved combustion efficiency, and piston temperature13 Feb 2024US 11,898,488 B2Caterpillar Inc.
- Ducted fuel injection strategy employing baffle for redirection of combusting fuel plumes10 Sep 2026US 2026/0266213 A1Caterpillar Inc.
- Piston for reciprocating within a cylinder in an internal combustion engine18 Jun 2026US 2026/0168460 A1Cummins Inc.
- Piston for diesel engines with optimized combustion chamber20 Mar 2025US 2025/0092817 A1Dumarey Automotive Italia S.p.A.
- An internal combustion engine system20 Feb 2025US 2025/0059926 A1VOLVO TRUCK CORPORATION Göteborg
- A piston and an internal combustion engine system6 Feb 2025US 2025/0043745 A1Volvo Truck Corporation
Most cited
By later US patents
- Hybrid electric vehicle127US 5,881,559 AIsuzu Ceramics Research Institute Co., Ltd. · 1999
- Combustion system for direct injection diesel engines95US 6,553,960 B1Yanmar Co., Ltd. · 2003
- Flame incubating and propagating apparatus for a fuel combustion system67US 4,721,081 ACaterpillar Inc. · 1988
- Method and apparatus for introducing fuel into a duel fuel system using the H-combustion process54US 5,365,902 AGeneral Electric Company · 1994
- Cast metal composite article53US 4,587,177 AImperial Clevite Inc. · 1986