F01P 3/08
Cooling of piston exterior only
Official title: Cooling of piston exterior only, e.g. by jets
F01P3/08 (Cooling of piston exterior only) appears on 202 US grants and 169 published applications in this corpus.
Search patents in F01P- Granted patents
- 202
- Published applications
- 169
- Assignees
- 111
- Inventors
- 389
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 2 |
| 2002 | 1 | 2 |
| 2003 | 3 | 3 |
| 2004 | 6 | 8 |
| 2005 | 4 | 12 |
| 2006 | 10 | 6 |
| 2007 | 5 | 3 |
| 2008 | 3 | 8 |
| 2009 | 2 | 2 |
| 2010 | 6 | 5 |
| 2011 | 0 | 0 |
| 2012 | 3 | 2 |
| 2013 | 2 | 6 |
| 2014 | 4 | 5 |
| 2015 | 8 | 20 |
| 2016 | 7 | 18 |
| 2017 | 15 | 16 |
| 2018 | 12 | 8 |
| 2019 | 13 | 11 |
| 2020 | 10 | 5 |
| 2021 | 7 | 6 |
| 2022 | 11 | 7 |
| 2023 | 7 | 5 |
| 2024 | 5 | 1 |
| 2025 | 4 | 3 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Piston temperature model using a physics-based split multi-model approach23 Jun 2026US 12,662,956 B2Saudi Arabian Oil Company
- Internal combustion engine control device and internal combustion engine control method27 Jan 2026US 12,535,021 B2Hitachi Astemo, Ltd.
- Piston bearing assembly for an opposed-piston engine30 Dec 2025US 12,510,015 B2General Atomics Aeronautical Systems, Inc.
- In-vehicle control device and method for controlling internal combustion engine5 Aug 2025US 12,378,927 B2Hitachi Astemo, Ltd.
- Control device for internal combustion engine27 May 2025US 12,312,992 B2Toyota Jidosha Kabushiki Kaisha
- Boxer Engine and Vehicle with a Boxer Engine1 Oct 2026US 2026/0298175 A1Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- System and method for managing temperature in an engine of a vehicle13 Aug 2026US 2026/0235089 A1Brp-Rotax GmbH & Co. KG
- Fluid nozzle device for a piston of an engine30 Jul 2026US 2026/0218646 A1Volvo Truck Corporation
- Piston temperature model using a physics-based split multi-model approach18 Jun 2026US 2026/0168428 A1Aramco Services Company
- Valve system7 May 2026US 2026/0126125 A1Volvo Truck Corporation
Most cited
By later US patents
- Two-piece piston assembly53US 4,377,967 AMack Trucks, Inc. · 1983
- Oil jet nozzle for an internal combustion with reciprocating pistons40US 5,533,472 AChrysler Corporation · 1996
- Apparatus for controlling temperature of internal combustion engine35US 4,399,774 ANissan Motor Co., Ltd. · 1983
- Means for controlling the oil cooling of the piston of a piston engine34US 4,114,571 A1978
- Internal combustion engines33US 4,204,487 ADavid Brown Tractors Limited · 1980