Control system for hybrid vehicles
The control device in hybrid vehicles manages engine operation and vehicle speed to extend suitable exhaust pressure periods for filter defect detection, addressing the challenge of intermittent engine operation in hybrid vehicles.
JP2026087128APending Publication Date: 2026-05-27TOYOTA JIDOSHA KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2024-11-15
- Publication Date
- 2026-05-27
AI Technical Summary
Technical Problem
In hybrid vehicles, the intermittent operation of the internal combustion engine results in shorter periods of exhaust pressure suitable for determining filter defects, making it challenging to accurately assess filter condition.
Method used
A control device that performs intermittent operation control of the internal combustion engine based on vehicle speed, allowing extended periods of suitable exhaust pressure for filter defect detection by controlling engine operation and vehicle speed to maintain optimal pressure conditions.
Benefits of technology
Ensures opportunities for accurate filter defect detection while minimizing fuel consumption by maintaining suitable exhaust pressure conditions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026087128000001_ABST
Abstract
The present invention provides a control device for a hybrid vehicle that can ensure an opportunity to detect values related to exhaust pressure necessary to determine whether or not there is a defect in the filter. [Solution] The hybrid vehicle includes a control device, a filter for collecting particulate matter contained in the exhaust, and a sensor for acquiring values related to the exhaust pressure. The processing circuit of the control device performs the following: a process for acquiring values related to the exhaust pressure in the exhaust passage from the sensor (step S25); a process for determining whether or not there is a defect in the filter using the data on the value related to the exhaust pressure in the exhaust passage; a process for prohibiting intermittent driving control if the vehicle speed of the hybrid vehicle is equal to or greater than a predetermined vehicle speed Vs, and a process for lowering the predetermined vehicle speed Vs if the vehicle speed of the hybrid vehicle is less than the predetermined vehicle speed Vs; and a process for lowering the predetermined vehicle speed Vs if the process for determining whether or not there is a defect in the filter has not been completed (step S20: YES).
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Citation Information
Patent Citations
Exhaust emission control device for internal combustion engine
JP2007247550A