17988258. METHOD OF CONTROLLING HYBRID ELECTRIC VEHICLE simplified abstract (HYUNDAI MOTOR COMPANY)
Contents
METHOD OF CONTROLLING HYBRID ELECTRIC VEHICLE
Organization Name
Inventor(s)
METHOD OF CONTROLLING HYBRID ELECTRIC VEHICLE - A simplified explanation of the abstract
This abstract first appeared for US patent application 17988258 titled 'METHOD OF CONTROLLING HYBRID ELECTRIC VEHICLE
Simplified Explanation
The patent application describes a method for controlling a hybrid electric vehicle that includes a torque converter between a motor and a transmission. The method involves determining the driver's torque demand and the output speed of the torque converter based on vehicle driving information. It then determines a target input speed for the torque converter based on the determined output speed and preset characteristic information of the torque converter. This target input speed is considered as the target engine starting speed. The method further involves starting the engine using the torque of the motor when the engine-on mode is determined, and controlling the engine speed to match the determined target engine starting speed after startup.
- The method determines the driver's torque demand and the output speed of the torque converter.
- It calculates a target input speed for the torque converter based on the determined output speed and preset characteristic information of the torque converter.
- The target input speed is used as the target engine starting speed.
- The engine is started using the torque of the motor when the engine-on mode is determined.
- The engine speed is controlled to match the determined target engine starting speed after startup.
Potential Applications
- This method can be applied in hybrid electric vehicles that use a torque converter between the motor and the transmission.
- It can be used to improve the control and efficiency of the engine startup process in hybrid electric vehicles.
Problems Solved
- The method solves the problem of efficiently starting the engine in a hybrid electric vehicle with a torque converter.
- It addresses the challenge of determining the appropriate target engine starting speed based on the driver's torque demand and the characteristics of the torque converter.
Benefits
- The method allows for improved control and efficiency in starting the engine of a hybrid electric vehicle.
- It helps optimize the performance of the torque converter and ensures smooth engine startup.
- The method can contribute to overall fuel efficiency and reduced emissions in hybrid electric vehicles.
Original Abstract Submitted
Disclosed herein is a method of controlling a hybrid electric vehicle in which a torque converter is disposed between a motor and a transmission for driving the hybrid electric vehicle comprises, by a control unit, determining a driver demand torque and an output speed of the torque converter based on vehicle driving information, determining a target input speed of the torque converter from the determined output speed of the torque converter based on preset characteristic information of the torque converter and information on the determined driver demand torque, determining the determined target input speed of the torque converter as a target engine starting speed, and performing control to start an engine using torque of the motor when an engine-on mode is determined, and controlling and engine speed to the determined target engine starting speed after startup.
