F02B 37/22
By varying cross-section of exhaust passages or air passages
Official title: by varying cross-section of exhaust passages or air passages {, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits} (F02B37/24 takes precedence)
F02B37/22 (By varying cross-section of exhaust passages or air passages) appears on 666 US grants and 640 published applications in this corpus.
Search patents in F02B- Granted patents
- 666
- Published applications
- 640
- Assignees
- 188
- Inventors
- 1,394
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 15 | 0 |
| 1988 | 20 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 0 |
| 2002 | 9 | 14 |
| 2003 | 18 | 13 |
| 2004 | 8 | 13 |
| 2005 | 11 | 14 |
| 2006 | 14 | 31 |
| 2007 | 9 | 21 |
| 2008 | 15 | 22 |
| 2009 | 13 | 29 |
| 2010 | 9 | 22 |
| 2011 | 18 | 32 |
| 2012 | 28 | 14 |
| 2013 | 15 | 15 |
| 2014 | 23 | 40 |
| 2015 | 24 | 57 |
| 2016 | 39 | 36 |
| 2017 | 39 | 40 |
| 2018 | 35 | 36 |
| 2019 | 39 | 47 |
| 2020 | 49 | 49 |
| 2021 | 42 | 30 |
| 2022 | 32 | 20 |
| 2023 | 24 | 14 |
| 2024 | 17 | 12 |
| 2025 | 14 | 8 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Engine system25 Aug 2026US 12,716,395 B2Volvo Truck Corporation
- Turbine housing and variable geometry turbocharger11 Aug 2026US 12,704,079 B2Mitsubishi Heavy Industries, Ltd.
- Method for starting a power system14 Jul 2026US 12,680,522 B2Volvo Truck Corporation
- Controller for internal combustion engine30 Jun 2026US 12,669,079 B2Toyota Jidosha Kabushiki Kaisha
- Venturi device with forced induction10 Mar 2026US 12,571,341 B2Zero Nox, Inc.
- Surge avoidance control device, internal combustion engine system, surge avoidance control method, and program17 Sep 2026US 2026/0275903 A1Komatsu Ltd.
- Centrifugal compressor and turbocharger13 Aug 2026US 2026/0235140 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Variable geometry turbine6 Aug 2026US 2026/0226846 A1Cummins Inc.
- Internal combustion engine having a flow that is able to be shut off for increasing torque18 Jun 2026US 2026/0168433 A1Man Truck & Bus AG
- Turbine housing and variable geometry turbocharger11 Jun 2026US 2026/0160185 A1Mitsubishi Heavy Industries, Ltd.
Most cited
By later US patents
- Control system for exhaust gas recovery system in an internal combustion engine151US 5,771,867 ACaterpillar Inc. · 1998
- Multiple operating mode engine and method of operation134US 6,561,157 B2Cummins Inc. · 2003
- System and method for engine fuel blend control110US 7,287,492 B2Ford Global Technologies, LLC · 2007
- Turbocharging system with integral assisting electric motor and cooling system therefor107US 5,605,045 ATurbodyne Systems, Inc. · 1997
- Internal combustion engine with an exhaust turbocharger and an exhaust-gas recirculation device102US 6,694,735 B2DaimlerChrysler AG · 2004