Internal combustion engine system
US-2026002497-A1 · Jan 1, 2026 · US
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Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels · 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 | F02D19/066 |
| Official title | {Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels} |
| Display label | Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2020 | 1 |
| 2025 | 8 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and method for controlling fuel substitution in a dual fuel engine system
US-12510033-B2 · Dec 30, 2025 · US
Engine device
US-2025290465-A1 · Sep 18, 2025 · US
Fuel management for dynamic gas blending disablement
US-12366213-B1 · Jul 22, 2025 · US
Hydrogen-diesel direct injection dual-fuel system for internal combustion engines
US-12338777-B2 · Jun 24, 2025 · US
Multi-fuel injector with fuel mixing
US-12326127-B2 · Jun 10, 2025 · US
Hydrogen-diesel direct injection dual-fuel system for internal combustion engines
US-2025116238-A1 · Apr 10, 2025 · US
System and method for controlling fuel substitution in a dual fuel engine system
US-2025092836-A1 · Mar 20, 2025 · US
Multi-fuel injector with fuel mixing
US-2025084813-A1 · Mar 13, 2025 · US
Energy converting device for converting electric energy into chemical energy, electrical network comprising such an energy converting device, and method for operating such an energy converting device
US-2020208274-A1 · Jul 2, 2020 · US
Dual distance to empty function for bi-fuel vehicle
US-9441999-B2 · Sep 13, 2016 · US
Methanol fuels for internal combustion engines
US-2016237362-A1 · Aug 18, 2016 · US
Dual distance to empty function for bi-fuel vehicle
US-2015051825-A1 · Feb 19, 2015 · US