Control system for hybrid vehicles
The hybrid vehicle control device optimizes engine speed based on battery charge and pressure to reduce fuel consumption and enhance thermal efficiency during negative pressure restoration in the brake booster.
JP2026064020APending Publication Date: 2026-04-13SUZUKI MOTOR CORP
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SUZUKI MOTOR CORP
- Filing Date
- 2024-10-01
- Publication Date
- 2026-04-13
AI Technical Summary
Technical Problem
Conventional hybrid vehicle control systems experience excessive fuel consumption when the engine is driven at high rotational speeds to recover negative pressure in the brake booster, which affects thermal efficiency.
Method used
A control device for a hybrid vehicle that includes a control unit to manage engine rotational speed based on battery charge state and negative pressure levels, switching between high and low speeds to optimize fuel consumption and thermal efficiency during negative pressure restoration.
Benefits of technology
The control device effectively suppresses excessive fuel consumption while maintaining efficient negative pressure recovery in the brake booster by dynamically adjusting engine speed according to battery charge and pressure needs.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026064020000001_ABST
Abstract
To provide a control device for a hybrid vehicle that can suppress excessive fuel consumption when restoring the negative pressure in the negative pressure chamber of a brake booster. [Solution] When the negative pressure in the negative pressure chamber is lower than the first negative pressure P1 that requires recovery, and the battery's SOC is less than or equal to the first SOC, the engine is driven at a high rotational speed by supplying fuel to the engine. When the negative pressure in the negative pressure chamber is lower than the first negative pressure P1, and the battery's SOC is higher than the first SOC, the engine is driven at a low rotational speed by supplying fuel to the engine.
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Citation Information
Patent Citations
Hybrid vehicle control device
JP7198118B2