F02D 2250/38
Control for minimising smoke emissions
Official title: Control for minimising smoke emissions, e.g. by applying smoke limitations on the fuel injection amount
F02D2250/38 (Control for minimising smoke emissions) appears on 185 US grants and 166 published applications in this corpus.
Search patents in F02D- Granted patents
- 185
- Published applications
- 166
- Assignees
- 68
- Inventors
- 489
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 9 |
| 2003 | 4 | 3 |
| 2004 | 8 | 4 |
| 2005 | 2 | 2 |
| 2006 | 6 | 3 |
| 2007 | 0 | 1 |
| 2008 | 4 | 4 |
| 2009 | 2 | 5 |
| 2010 | 5 | 5 |
| 2011 | 1 | 5 |
| 2012 | 4 | 4 |
| 2013 | 5 | 10 |
| 2014 | 3 | 9 |
| 2015 | 6 | 9 |
| 2016 | 12 | 11 |
| 2017 | 11 | 19 |
| 2018 | 12 | 11 |
| 2019 | 16 | 16 |
| 2020 | 15 | 10 |
| 2021 | 9 | 10 |
| 2022 | 11 | 6 |
| 2023 | 3 | 4 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Variable valve actuation controls for engines7 Apr 2026US 12,595,769 B2Cummins Inc.
- Engine control device and engine control method15 Jul 2025US 12,359,640 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Method and system for engine and machine control24 Dec 2024US 12,172,647 B2Caterpillar Inc.
- Port injection system for reduction of particulates from turbocharged direct injection gasoline engines16 Apr 2024US 11,959,428 B2Ethanol Boosting Systems, LLC
- Internal combustion engine11 Jun 2026US 2026/0160216 A1Toyota Jidosha Kabushiki Kaisha
- Verfahren zum Betreiben einer H2-Brennkraftmaschine30 Apr 2026US 2026/0117721 A1Robert Bosch GmbH
- High presure fuel delivery systems in an opposed piston engine and related methods1 Jan 2026US 2026/0002478 A1Enginuity Power Systems, Inc.
- Engine control device and engine control method2 Jan 2025US 2025/0003373 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Method of controlling internal combustion engine, control arrangement, internal combustion engine, and vehicle26 Dec 2024US 2024/0426256 A1Scania CV AB
Most cited
By later US patents
- Method for engine control136US 5,445,128 ADetroit Diesel Corporation · 1995
- Control strategy for diesel engine auxiliary loads to reduce emissions during engine power level changes81US 6,725,134 B2General Electric Company · 2004
- Fuel injection controlling system for a diesel engine77US 6,612,291 B2Nissan Motor Co., Ltd. · 2003
- Method for engine control73US 5,483,927 ADetroit Diesel Corporation · 1996
- Method and apparatus for torque control of an internal combustion engine as a function of exhaust smoke level57US 4,601,270 AUnited Technologies Diesel Systems, Inc. · 1986