17988258. METHOD OF CONTROLLING HYBRID ELECTRIC VEHICLE simplified abstract (KIA CORPORATION)
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 preset characteristic information and the driver's torque demand. This target input speed is used as the target engine starting speed. When the engine-on mode is determined, the method starts the engine using the torque from the motor and controls the engine speed to match the target engine starting speed after startup.
- The method determines the driver's torque demand and the output speed of the torque converter based on vehicle driving information.
- It calculates a target input speed for the torque converter using preset characteristic information and the driver's torque demand.
- The target input speed is used as the target engine starting speed.
- When the engine-on mode is determined, the method starts the engine using the torque from the motor.
- It then controls the engine speed to match the target engine starting speed after startup.
Potential Applications
- This method can be applied to hybrid electric vehicles that use a torque converter between the motor and the transmission.
- It can be used to optimize the engine starting process and improve the overall efficiency of the vehicle.
Problems Solved
- The method solves the problem of efficiently starting the engine in a hybrid electric vehicle with a torque converter.
- It ensures that the engine starts at the optimal speed based on the driver's torque demand and the characteristics of the torque converter.
Benefits
- By starting the engine using the torque from the motor, the method reduces the load on the engine and improves fuel efficiency.
- Controlling the engine speed to match the target engine starting speed after startup ensures smooth operation and optimal performance of the vehicle.
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.
