F02D 41/1443
With one sensor per cylinder or group of cylinders
Official title: {with one sensor per cylinder or group of cylinders}
F02D41/1443 (With one sensor per cylinder or group of cylinders) appears on 220 US grants and 124 published applications in this corpus.
Search patents in F02D- Granted patents
- 220
- Published applications
- 124
- Assignees
- 70
- Inventors
- 496
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 12 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 13 | 1 |
| 2002 | 9 | 4 |
| 2003 | 6 | 13 |
| 2004 | 10 | 6 |
| 2005 | 5 | 6 |
| 2006 | 6 | 5 |
| 2007 | 7 | 10 |
| 2008 | 6 | 8 |
| 2009 | 9 | 10 |
| 2010 | 4 | 0 |
| 2011 | 6 | 3 |
| 2012 | 4 | 2 |
| 2013 | 1 | 4 |
| 2014 | 1 | 5 |
| 2015 | 2 | 6 |
| 2016 | 5 | 7 |
| 2017 | 9 | 3 |
| 2018 | 4 | 4 |
| 2019 | 8 | 5 |
| 2020 | 5 | 6 |
| 2021 | 5 | 1 |
| 2022 | 5 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 4 | 2 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for modulating engine air-fuel ratio during cylinder imbalance diagnostic26 May 2026US 12,637,990 B1Ford Global Technologies, LLC
- Methods and systems for V8 engine fuel control3 Feb 2026US 12,540,583 B1Ford Global Technologies, LLC
- System and method for controlling fuel substitution in a dual fuel engine system30 Dec 2025US 12,510,033 B2Cummins Power Generation Inc.
- Individual throttle-type or unequal interval combustion-type multi-cylinder engine unit21 Oct 2025US 12,448,930 B2Yamaha Hatsudoki Kabushiki Kaisha
- Methods and systems for verifying oxygen sensor connections25 Feb 2025US 12,234,784 B1Ford Global Technologies, LLC
- Detonation detection2 Jul 2026US 2026/0185902 A1Caterpillar Inc.
- Methods and systems for diagnosing four oxygen sensor system18 Jun 2026US 2026/0168456 A1Ford Global Technologies, LLC
- Methods and systems for modulating engine air-fuel ratio during cylinder imbalance diagnostic28 May 2026US 2026/0146573 A1Ford Global Technologies, LLC
- System and method for controlling fuel substitution in a dual fuel engine system30 Apr 2026US 2026/0117716 A1Cummins Power Generation Inc.
- Methods and systems for individual cylinder fuel-air ratio adaptation19 Mar 2026US 2026/0078712 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Device for detecting deterioration of a catalytic converter for an engine85US 5,377,484 AToyota Jidosha Kabushiki Kaisha · 1995
- Variable displacement engine control for fast catalyst light-off82US 6,389,806 B1Ford Global Technologies, LLC · 2002
- Method and device for purifying exhaust gas of an engine75US 6,345,496 B1Toyota Jidosha Kabushiki Kaisha · 2002
- Air-fuel ratio control system for internal combustion engine74US 5,570,574 ANippondenso Co., Ltd. · 1996
- Method and device for purifying exhaust gas of engine71US 6,047,542 AToyota Jidosha Kabushiki Kaisha · 2000