F02D 41/1456
With sensor output signal being linear or quasi-linear with the concentration of
Official title: {with sensor output signal being linear or quasi-linear with the concentration of oxygen}
F02D41/1456 (With sensor output signal being linear or quasi-linear with the concentration of) appears on 1,100 US grants and 746 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,100
- Published applications
- 746
- Assignees
- 169
- Inventors
- 1,692
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 12 | 0 |
| 1988 | 18 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 6 | 0 |
| 1992 | 12 | 0 |
| 1993 | 15 | 0 |
| 1994 | 14 | 0 |
| 1995 | 20 | 0 |
| 1996 | 25 | 0 |
| 1997 | 27 | 0 |
| 1998 | 53 | 0 |
| 1999 | 36 | 0 |
| 2000 | 39 | 0 |
| 2001 | 44 | 15 |
| 2002 | 48 | 49 |
| 2003 | 38 | 69 |
| 2004 | 54 | 54 |
| 2005 | 49 | 37 |
| 2006 | 37 | 24 |
| 2007 | 32 | 23 |
| 2008 | 13 | 16 |
| 2009 | 15 | 20 |
| 2010 | 16 | 15 |
| 2011 | 13 | 23 |
| 2012 | 13 | 27 |
| 2013 | 18 | 48 |
| 2014 | 30 | 30 |
| 2015 | 35 | 59 |
| 2016 | 49 | 66 |
| 2017 | 49 | 38 |
| 2018 | 58 | 36 |
| 2019 | 50 | 26 |
| 2020 | 38 | 21 |
| 2021 | 23 | 12 |
| 2022 | 12 | 7 |
| 2023 | 9 | 10 |
| 2024 | 9 | 3 |
| 2025 | 1 | 3 |
| 2026 | 3 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- Method of fuel injector management based on cylinder knock detection and vehicle including the same17 Mar 2026US 12,577,921 B1GM Global Technology Operations LLC
- Methods and systems for V8 engine fuel control3 Feb 2026US 12,540,583 B1Ford Global Technologies, LLC
- Systems and methods for controlling a vehicle engine27 May 2025US 12,313,018 B2Honda Motor Co., Ltd.
- Motor vehicle sensor diagnostics and cleaning method17 Dec 2024US 12,168,947 B2Vitesco Technologies GmbH
- System and method for adaptive control of air-to-fuel ratio18 Jun 2026US 2026/0168452 A1Caterpillar Inc.
- Methods and systems for diagnosing four oxygen sensor system18 Jun 2026US 2026/0168456 A1Ford Global Technologies, LLC
- Engine catalyst diagnosis apparatus11 Jun 2026US 2026/0160194 A1Mazda Motor Corporation
- Engine exhaust gas purification apparatus11 Jun 2026US 2026/0160213 A1Mazda Motor Corporation
- Internal combustion engine system30 Apr 2026US 2026/0117719 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Air/fuel control with on-board emission measurement118US 5,452,576 AFord Motor Company · 1995
- Method for monitoring the performance of a NO.sub.x trap110US 5,771,685 AFord Global Technologies, LLC · 1998
- Air-fuel ratio control system for internal combustion engines and exhaust system temperature-estimating device applicable thereto101US 5,678,402 AHonda Giken Kogyo Kabushiki Kaisha · 1997
- Method for monitoring the performance of a no.sub.x trap101US 5,743,084 AFord Global Technologies, LLC · 1998
- Exhaust gas purification device for an internal combustion engine97US 5,970,707 AToyota Jidosha Kabushiki Kaisha · 1999