Internal combustion engine

The internal combustion engine design addresses methanol ratio limitations by separate intake and combustion chamber injections, enhancing greenhouse gas reduction and preventing combustion failures.

JP2026109240APending Publication Date: 2026-07-01DAIHATSU INFINEARTH MFG CO LTD +1
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Patent Information

Application Number
JP2024224210
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-19
Publication Date
2026-07-01

AI Technical Summary

Technical Problem

Existing internal combustion engines face challenges in increasing the methanol ratio in fuel mixtures to reduce greenhouse gases without requiring special injectors or causing combustion failures due to methanol's low lubricity and biodiesel's condensation issues.

Method used

An internal combustion engine design with separate injectors for methanol injection into the intake port and biodiesel injection into the combustion chamber, using existing injectors and a heating unit to prevent condensation, allowing for a higher methanol proportion and avoiding combustion failures.

Benefits of technology

Enables increased methanol use to reduce greenhouse gases while preventing injector wear and combustion issues, using existing injectors and minimizing biodiesel condensation.

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Abstract

This technology allows for a reduction in greenhouse gas emissions by increasing the methanol ratio without requiring a special injector, while also preventing combustion failures. [Solution] The engine 1 comprises a cylinder liner 2, a cylinder head 3, a piston 4, a combustion chamber 9 formed by these, an intake port 5 communicating with the combustion chamber 9, a first injector 12 that injects methanol into the intake port 5, and a second injector 23 that injects ignition fuel containing biodiesel fuel into the combustion chamber 9.
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Citation Information

Patent Citations

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  • Fuel injection device for internal combustion engine using low ignitability fuel

    JP2019132221A

  • Fuel for internal combustion engine and fuel supply device

    JP2024154598A

  • Low Temperature Dual Fuel Combustion Utilizing Diesel and Methanol Fuels

    US20140026853A1