F02M 59/20
Varying fuel delivery in quantity or timing
F02M59/20 (Varying fuel delivery in quantity or timing) appears on 1,648 US grants and 947 published applications in this corpus.
Search patents in F02M- Granted patents
- 1,648
- Published applications
- 947
- Assignees
- 270
- Inventors
- 2,161
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 11 | 0 |
| 1978 | 16 | 0 |
| 1979 | 14 | 0 |
| 1980 | 16 | 0 |
| 1981 | 16 | 0 |
| 1982 | 14 | 0 |
| 1983 | 41 | 0 |
| 1984 | 43 | 0 |
| 1985 | 45 | 0 |
| 1986 | 46 | 0 |
| 1987 | 38 | 0 |
| 1988 | 36 | 0 |
| 1989 | 37 | 0 |
| 1990 | 34 | 0 |
| 1991 | 38 | 0 |
| 1992 | 26 | 0 |
| 1993 | 39 | 0 |
| 1994 | 33 | 0 |
| 1995 | 30 | 0 |
| 1996 | 30 | 0 |
| 1997 | 35 | 0 |
| 1998 | 24 | 0 |
| 1999 | 43 | 0 |
| 2000 | 33 | 0 |
| 2001 | 46 | 10 |
| 2002 | 35 | 48 |
| 2003 | 58 | 68 |
| 2004 | 62 | 86 |
| 2005 | 59 | 45 |
| 2006 | 38 | 56 |
| 2007 | 43 | 44 |
| 2008 | 47 | 50 |
| 2009 | 33 | 40 |
| 2010 | 34 | 30 |
| 2011 | 21 | 27 |
| 2012 | 19 | 24 |
| 2013 | 15 | 31 |
| 2014 | 14 | 37 |
| 2015 | 30 | 41 |
| 2016 | 40 | 47 |
| 2017 | 40 | 36 |
| 2018 | 42 | 46 |
| 2019 | 43 | 60 |
| 2020 | 53 | 49 |
| 2021 | 51 | 19 |
| 2022 | 34 | 11 |
| 2023 | 10 | 13 |
| 2024 | 13 | 10 |
| 2025 | 12 | 6 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02M 59/36By variably-timed valves controlling fuel passages to pumping elements or overflow passages1,215
- F02M 59/24With constant-length-stroke pistons having variable effective portion of stroke182
- F02M 59/34By throttling of passages to pumping elements or of overflow passages148
- F02M 59/30With variable-length-stroke pistons104
- F02M 59/32Fuel delivery being controlled by means of fuel-displaced auxiliary pistons, which effect77
- F02M 59/205Quantity of fuel admitted to pumping elements being metered by an auxiliary58
- F02M 59/22Varying quantity or timing by adjusting cylinder-head space30
Recent patents
- Dual variable displacement pump fuel system with FOC bypass and washed actuation flow23 Jun 2026US 12,662,981 B2Hamilton Sundstrand Corporation
- Fuel pump23 Jun 2026US 12,662,982 B2Phinia Delphi Luxembourg Sarl
- Valve assembly for a fuel pump5 May 2026US 12,618,387 B2Phinia Delphi Luxembourg Sarl
- Fluid pump10 Feb 2026US 12,546,277 B2Phinia Jersey Holdings LLC
- Inlet metering valve block30 Dec 2025US 12,510,047 B1Transportation IP Holdings, LLC
- Fuel system with self-optimizing fuel control valve27 Aug 2026US 2026/0251111 A1Deere & Company
- Internal Combustion Engine Control Device and Internal Combustion Engine Control Method20 Aug 2026US 2026/0243213 A1Astemo, Ltd.
- Valve Mechanism and Fuel Pump20 Aug 2026US 2026/0243220 A1Astemo, Ltd.
- Solenoid Valve Mechanism and Fuel Pump2 Jul 2026US 2026/0185500 A1Hitachi Astemo, Ltd.
- Fuel pressure measurement and related processes, systems, and controls25 Jun 2026US 2026/0177015 A1Cummins-Scania HPCR System, LLC
Most cited
By later US patents
- Set of piston type fuel pumps for internal combustion engines with direct fuel injection118US 7,281,519 B2Robert Bosch GmbH · 2007
- System and methods for electronic control of an accumulator fuel system101US 5,678,521 ACummins Engine Company, Inc. · 1997
- High pressure fuel injection system for internal combustion engine84US 6,024,064 ADenso Corporation · 2000
- Electromagnetic unit fuel injector82US 4,392,612 AGeneral Motors Corporation · 1983
- Fuel injection system for an internal combustion engine82US 4,884,545 ADereco Dieselmotoren Forschungs-und Entwick-lungs-AG · 1989