F02D 41/3058
The engine working with a variable number of cycles
Official title: {the engine working with a variable number of cycles}
F02D41/3058 (The engine working with a variable number of cycles) appears on 144 US grants and 142 published applications in this corpus.
Search patents in F02D- Granted patents
- 144
- Published applications
- 142
- Assignees
- 51
- Inventors
- 257
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 5 | 3 |
| 2004 | 2 | 6 |
| 2005 | 3 | 4 |
| 2006 | 4 | 5 |
| 2007 | 5 | 5 |
| 2008 | 5 | 10 |
| 2009 | 6 | 8 |
| 2010 | 6 | 8 |
| 2011 | 5 | 4 |
| 2012 | 9 | 6 |
| 2013 | 5 | 4 |
| 2014 | 3 | 7 |
| 2015 | 4 | 3 |
| 2016 | 5 | 3 |
| 2017 | 4 | 11 |
| 2018 | 7 | 12 |
| 2019 | 12 | 7 |
| 2020 | 6 | 9 |
| 2021 | 12 | 5 |
| 2022 | 14 | 11 |
| 2023 | 6 | 2 |
| 2024 | 3 | 1 |
| 2025 | 2 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Engine braking mode selection systems and methods16 Jun 2026US 12,655,806 B2Cummins Inc.
- Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method16 Dec 2025US 12,497,928 B2Purdue Research Foundation
- Systems and methods for extra-stroke engine cycle operation5 Aug 2025US 12,378,910 B1Caterpillar Inc.
- Camless engines25 Jun 2024US 12,018,624 B1
- Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method4 Jun 2024US 12,000,351 B2Purdue Research Foundation
- Systems and methods for exhaust gas sensor monitoring7 Aug 2025US 2025/0250948 A1Ford Global Technologies, LLC
- Engine braking mode selection systems and methods5 Jun 2025US 2025/0179966 A1Cummins Inc.
- Camless engines8 May 2025US 2025/0146445 A1
- Method for dynamically determining a firing pattern for an engine with dynamic cylinder activation and a system implementing the method19 Sep 2024US 2024/0309826 A1Purdue Research Foundation
- Method for controlling the operation of an engine system2 Nov 2023US 2023/0349337 A1Volvo Truck Corporation
Most cited
By later US patents
- Internal combustion engine control for improved fuel efficiency208US 7,577,511 B1Tula Technology, Inc. · 2009
- Engine operation using fully flexible valve and injection events156US 5,117,790 ACaterpillar Inc. · 1992
- Vehicle management computer113US 5,284,116 ANorth American Philips Corporation · 1994
- Vehicle management computer106US 5,123,397 ANorth American Philips Corporation · 1992
- Internal combustion engine control for improved fuel efficiency97US 8,131,447 B2Tula Technology, Inc. · 2012