F02B 2023/085
Using several spark plugs per cylinder
Official title: {using several spark plugs per cylinder}
F02B2023/085 (Using several spark plugs per cylinder) appears on 136 US grants and 83 published applications in this corpus.
Search patents in F02B- Granted patents
- 136
- Published applications
- 83
- Assignees
- 62
- Inventors
- 282
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 1 |
| 2002 | 2 | 4 |
| 2003 | 3 | 3 |
| 2004 | 2 | 1 |
| 2005 | 3 | 2 |
| 2006 | 0 | 3 |
| 2007 | 5 | 5 |
| 2008 | 3 | 1 |
| 2009 | 0 | 5 |
| 2010 | 6 | 7 |
| 2011 | 4 | 4 |
| 2012 | 2 | 3 |
| 2013 | 2 | 4 |
| 2014 | 4 | 2 |
| 2015 | 2 | 6 |
| 2016 | 1 | 2 |
| 2017 | 6 | 5 |
| 2018 | 2 | 5 |
| 2019 | 4 | 6 |
| 2020 | 5 | 2 |
| 2021 | 3 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 2 |
| 2024 | 5 | 6 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Internal combustion engine with spark plug and prechamber spark plug12 Aug 2025US 12,385,446 B2Robert Bosch GmbH
- Internal combustion engine with spark plug and prechamber spark plug10 Sep 2024US 12,085,009 B2Robert Bosch GmbH
- Internal combustion engine comprising at least one cylinder equipped with a pre-chamber, an injector and two spark plugs, and method for operating same2 Jul 2024US 12,025,088 B2Bayerische Motoren Werke Aktiengesellschaft
- Direct-injection, applied-ignition internal combustion engine with injection device arranged in the cylinder liner, and method for operating an internal combustion engine of said type12 Mar 2024US 11,927,148 B2Ford Global Technologies, LLC
- High-performance internal combustion engine with improved handling of emission and method of controlling such engine6 Feb 2024US 11,891,945 B2Ferrari S.P. A.
- Engine13 Aug 2026US 2026/0235068 A1Ishikawa Energy Research Co., Ltd.
- System and method for misfire detection for dual spark plug engine31 Jul 2025US 2025/0244207 A1Fca US LLC
- Method of combustion and fuel injection system for hydrogen gas12 Dec 2024US 2024/0410311 A1
- Engine19 Sep 2024US 2024/0309799 A1Kawasaki Motors, Ltd.
- Internal Combustion Engine with Spark Plug and Prechamber Spark Plug11 Jul 2024US 2024/0229705 A9Robert Bosch GmbH
Most cited
By later US patents
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980
- Winged reentrant electromagnetic combustion chamber69US 4,561,406 ACombustion Electromagnetics, Inc. · 1985
- Direct fuel injection stratified charge engine63US 5,605,125 A1997
- Direct fuel injection stratified charge engine53US 5,746,171 A1998
- Ignition method and apparatus for internal combustion engine50US 4,124,003 ATokai TRW & Co., Ltd. · 1978