F02D 21/10
Having secondary air added to the fuel-air mixture
Official title: having secondary air added to the fuel-air mixture
F02D21/10 (Having secondary air added to the fuel-air mixture) appears on 20 US grants and 16 published applications in this corpus.
Search patents in F02D- Granted patents
- 20
- Published applications
- 16
- Assignees
- 15
- Inventors
- 62
- Latest grant
- 6 Dec 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 2 | 4 |
| 2020 | 3 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for operating an engine with reduced NOx emissions6 Dec 2022US 11,519,344 B2
- Combustor with flow guide in double pipe type liner, and gas turbine having same8 Dec 2020US 10,859,011 B2Doosan Heavy Industries Construction Co., Ltd
- Internal combustion engine control apparatus5 May 2020US 10,641,186 B2Hitachi Automotive Systems, Ltd.
- Internal combustion engine injection system21 Jan 2020US 10,539,080 B2
- Method for operating an engine2 Jul 2019US 10,337,460 B2Caterpillar Motoren GmbH & Co. KG
- System and Method for Operating an Engine with Reduced NOx Emissions19 Aug 2021US 2021/0254564 A1
- Combustor with flow guide in double pipe type liner, and gas turbine having same3 Oct 2019US 2019/0301375 A1Doosan Heavy Industries Construction Co., Ltd
- System And Method For Operating An Engine With Reduced NOx Emissions22 Aug 2019US 2019/0257254 A1
- Internal combustion engine control apparatus14 Feb 2019US 2019/0048807 A1Hitachi Automotive Systems, Ltd.
- Fuel Injection Valve Control Device7 Feb 2019US 2019/0040814 A1Hitachi Automotive Systems, Ltd.
Most cited
By later US patents
- Electronically-controlled late cycle air injection to achieve simultaneous reduction of NOx and particulates emissions from a diesel engine46US 6,752,131 B2General Motors Corporation · 2004
- Method and system for late cycle oxygen injection in an internal combustion engine39US 6,067,973 ACaterpillar Inc. · 2000
- Internal combustion engine with a bypass line skirting the load-control organ of the internal combustion engine9US 4,187,821 ADr. Ing. h,c.F. Porsche Aktiengesellschaft · 1980
- Supercharger control means for internal combustion engine8US 4,470,394 AToyo Kogyo Co., Ltd. · 1984
- Apparatus for the detoxification of exhaust gases7US 4,007,719 ARobert Bosch GmbH · 1977