Fuel management system for variable ethanol octane enhancement of gasoline engines
US-9810166-B2 · Nov 7, 2017 · US
Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00)
Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00) · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F02M25/00 |
| Official title | Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00) |
| Display label | Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00) |
| Total patents | 176 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 14 |
| 2016 | 23 |
| 2017 | 23 |
| 2018 | 23 |
| 2019 | 30 |
| 2020 | 23 |
| 2021 | 9 |
| 2022 | 9 |
| 2023 | 8 |
| 2024 | 8 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Cartridge for mixing dme fuel with additives
US-2017312715-A1 · Nov 2, 2017 · US
Control system of internal combustion engine
US-2017292463-A1 · Oct 12, 2017 · US
System and method for managing a volatile organic compound emission stream
US-9784192-B2 · Oct 10, 2017 · US
System and method for engine boosting
US-9771857-B1 · Sep 26, 2017 · US
Vehicle drive system
US-2017240165-A1 · Aug 24, 2017 · US
Quaternary ammonium compounds and their use as fuel or lubricant additives
US-2017218291-A1 · Aug 3, 2017 · US
Recirculating Noble Gas Internal Combustion Power Cycle
US-2017211515-A1 · Jul 27, 2017 · US
Fluid System and Method
US-2017197596-A1 · Jul 13, 2017 · US
Fuel management system for variable ethanol octane enhancement of gasoline engines
US-2017191431-A1 · Jul 6, 2017 · US
Fuel management system for variable ethanol octane enhancement of gasoline engines
US-9695784-B2 · Jul 4, 2017 · US
Valve Unit With Purge Air Pump
US-2017184057-A1 · Jun 29, 2017 · US
Method for diagnosing the malfunctioning of a device for adding an additive into a fuel for a vehicle, and system for implementing said method
US-9677969-B2 · Jun 13, 2017 · US
Feedback controlled system for charged ignition promoter droplet distribution
US-2017159583-A1 · Jun 8, 2017 · US
Feedback controlled system for ignition promoter droplet generation
US-2017159615-A1 · Jun 8, 2017 · US
Method for reducing valve recession in gaseous fuel engines
US-9624872-B2 · Apr 18, 2017 · US
Fuel supply system with leakage detection means
US-9624873-B2 · Apr 18, 2017 · US
Airborne Engine Additive Delivery System
US-2017082019-A1 · Mar 23, 2017 · US
System and Method For Managing a Volatile Organic Compound Emission Stream
US-2017058790-A1 · Mar 2, 2017 · US
Managing fuel oil mixture in engines
US-2017037788-A1 · Feb 9, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M25/00?
- CPC F02M25/00 is the Cooperative Patent Classification code for “Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00).”
- How many patents are filed under CPC F02M25/00 (Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture (adding secondary air to fuel-air mixture F02M23/00; adding exhaust gases F02M26/00; fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid F02M43/00))?
- Our database includes 176 publications tagged with this CPC code.
- Is patent activity under CPC F02M25/00 growing?
- Publication counts under this code: 8 in 2024 vs 5 in 2025 (latest complete years).