Engine system
The engine system stabilizes combustion by switching between fuels with different properties based on engine load and temperature, addressing instability and knocking issues.
JP2026006085APending Publication Date: 2026-01-16MAZDA MOTOR CORP
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Patent Information
- Application Number
- JP2024104849
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2026-01-16
AI Technical Summary
Technical Problem
Existing engine systems fail to ensure stable combustion when engine load is low and do not adequately prevent abnormal combustion such as knocking, particularly when engine water temperature or intake air temperature is low.
Method used
An engine system that injects a main fuel and a first fuel with faster combustion speed and a second fuel with higher octane number into the combustion chamber, controlled by a system that switches fuel types based on engine load, water temperature, and intake air temperature to stabilize combustion and prevent knocking.
Benefits of technology
The system ensures stable combustion across varying engine loads and temperatures by promoting flame growth and suppressing abnormal combustion, thereby improving overall engine performance.
✦ Generated by Eureka AI based on patent content.
Abstract
To provide an engine system capable of improving combustion stability while preventing constant combustion.SOLUTION: A fuel injection device 11,12 that injects a main fuel, a first fuel having a combustion speed faster than that of the main fuel, and a second fuel having an octane number higher than that of the main fuel into the combustion chamber 5 as a fuel is provided, and when an engine load is less than a switching load Tx, the main fuel and the first fuel are injected into the combustion chamber 5; Further, the fuel injection device 11,12 is controlled so that the first fuel is injected after the main fuel is injected, and when the engine load is the switching load Tx or higher, the fuel injection device 11,12 is controlled so that the main fuel and the second fuel are injected into the combustion chamber 5 and the second fuel is injected after the main fuel is injected.SELECTED DRAWING: Figure 5
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