F02D 41/22
Safety or indicating devices for abnormal conditions
Official title: Safety or indicating devices for abnormal conditions {(in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809)}
F02D41/22 (Safety or indicating devices for abnormal conditions) appears on 5,164 US grants and 4,765 published applications in this corpus.
Search patents in F02D- Granted patents
- 5,164
- Published applications
- 4,765
- Assignees
- 708
- Inventors
- 8,731
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 17 | 0 |
| 1985 | 25 | 0 |
| 1986 | 24 | 0 |
| 1987 | 10 | 0 |
| 1988 | 27 | 0 |
| 1989 | 19 | 0 |
| 1990 | 34 | 0 |
| 1991 | 46 | 0 |
| 1992 | 44 | 0 |
| 1993 | 57 | 0 |
| 1994 | 32 | 0 |
| 1995 | 46 | 0 |
| 1996 | 53 | 0 |
| 1997 | 50 | 0 |
| 1998 | 41 | 0 |
| 1999 | 66 | 0 |
| 2000 | 79 | 0 |
| 2001 | 86 | 38 |
| 2002 | 109 | 104 |
| 2003 | 122 | 147 |
| 2004 | 135 | 134 |
| 2005 | 118 | 154 |
| 2006 | 154 | 143 |
| 2007 | 137 | 143 |
| 2008 | 123 | 219 |
| 2009 | 104 | 219 |
| 2010 | 176 | 207 |
| 2011 | 140 | 181 |
| 2012 | 169 | 177 |
| 2013 | 168 | 226 |
| 2014 | 158 | 215 |
| 2015 | 203 | 243 |
| 2016 | 223 | 301 |
| 2017 | 247 | 304 |
| 2018 | 294 | 304 |
| 2019 | 318 | 275 |
| 2020 | 313 | 268 |
| 2021 | 288 | 213 |
| 2022 | 254 | 172 |
| 2023 | 164 | 115 |
| 2024 | 139 | 99 |
| 2025 | 86 | 84 |
| 2026 | 44 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02D 41/221Relating to the failure of actuators or electrically driven elements1,480
- F02D 41/222Relating to the failure of sensors or parameter detection devices1,266
- F02D 2041/224Diagnosis of the fuel systemIndexing code794
- F02D 2041/228Warning displaysIndexing code514
- F02D 2041/227Limping home, i.e. taking specific engine control measures at abnormal conditionsIndexing code404
Recent patents
- Controller for a fuel supply system29 Sep 2026US 12,747,709 B2Toyota Jidosha Kabushiki Kaisha
- Hydrogen mixed-combustion electronic control device and power generation system using same15 Sep 2026US 12,736,014 B2Hitachi, Ltd.
- Hybrid car and method for controlling same25 Aug 2026US 12,715,427 B2Hyundai Motor Company
- Control device for vehicle18 Aug 2026US 12,710,016 B2Toyota Jidosha Kabushiki Kaisha
- Method and apparatus for detecting the operation of an engine-independent auxiliary heater and for diagnosing a coolant temperature of a motor vehicle4 Aug 2026US 12,697,855 B2Volkswagen Aktiengesellschaft
- Non-intrusive fueling event measurement for fueling systems8 Oct 2026US 2026/0309103 A1Cummins-Scania HPCR System, LLC
- Automatic injector cutout tool1 Oct 2026US 2026/0298169 A1Transportation IP Holdings, LLC
- Apparatuses, processes, and systems including fuel composition determination1 Oct 2026US 2026/0298170 A1Clummins Inc.
- Fuel leakage diagnostic and fuel system diagnostic management apparatuses, methods, and systems1 Oct 2026US 2026/0298171 A1Cummins-Scania HPCR System, LLC
- Apparatus and method for diagnosing an engine system24 Sep 2026US 2026/0286910 A1Hyundai Motor Company
Most cited
By later US patents
- Accelerator control system for a motor vehicle327US 5,109,819 ACummins Electronics Company, Inc. · 1992
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Fault diagnostic system for vehicles using identification and program codes172US 5,491,631 AHonda Giken Kogyo Kabushiki Kaisha · 1996
- Diagnostic system using pattern recognition for electronic automotive control systems171US 5,041,976 AFord Motor Company · 1991
- Compensation circuit for an automotive ignition sensing system165US 6,392,315 B1Delphi Technologies, Inc. · 2002