US Patent Application 18187000. CONTROLLER FOR HYBRID ELECTRIC VEHICLE AND METHOD FOR CONTROLLING HYBRID ELECTRIC VEHICLE simplified abstract

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CONTROLLER FOR HYBRID ELECTRIC VEHICLE AND METHOD FOR CONTROLLING HYBRID ELECTRIC VEHICLE

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Koji Murakami of Toyota-shi (JP)

CONTROLLER FOR HYBRID ELECTRIC VEHICLE AND METHOD FOR CONTROLLING HYBRID ELECTRIC VEHICLE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18187000 titled 'CONTROLLER FOR HYBRID ELECTRIC VEHICLE AND METHOD FOR CONTROLLING HYBRID ELECTRIC VEHICLE

Simplified Explanation

The patent application describes a controller for a hybrid electric vehicle that starts the engine under certain conditions.

  • The controller has a two-step engine starting process.
  • The first step involves using a motor generator to crank the engine.
  • If the first step fails, the second step is executed.
  • The second step involves temporarily stopping power supply to the motor generator and then using it to crank the engine.
  • The controller keeps track of how many times the second step is executed after the first step fails.
  • If the count reaches a certain threshold, the controller disables the engine's idle reduction system, even if the second step successfully starts the engine.


Original Abstract Submitted

A controller for a hybrid electric vehicle executes an engine starting process when an execution condition for starting an engine is satisfied. The engine starting process includes a first starting process that drives a motor generator to crank the engine and a second starting process that is executed when the first starting process failed to start the engine. The second starting process includes suspending supply of power to the motor generator and then driving the motor generator to crank the engine. The controller performs a counting process that counts an occurrence of execution of the second starting process after the first starting process failed to start the engine. When the counted occurrence is greater than or equal to a determination threshold value, the controller prohibits operation of an idle reduction system of the engine even if the second starting process successfully started the engine.

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