18340553. CONTROLLER AND CONTROL METHOD FOR VEHICLE simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

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CONTROLLER AND CONTROL METHOD FOR VEHICLE

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Eiji Ikuta of Obu-shi (JP)

Masanao Idogawa of Nagoya-shi (JP)

Yuho Tokugawa of Toyota-shi (JP)

CONTROLLER AND CONTROL METHOD FOR VEHICLE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18340553 titled 'CONTROLLER AND CONTROL METHOD FOR VEHICLE

Simplified Explanation

The abstract describes a controller for a vehicle with an internal combustion engine and automatic transmission. The controller is designed to perform a shifting process to change the gear ratio of the transmission and a lean operation process to run the engine with a lean air-fuel mixture. During the shifting process, the controller adjusts the air-fuel ratio closer to the stoichiometric ratio compared to when the shifting process is not being executed.

  • The controller is configured to control a vehicle with an internal combustion engine and automatic transmission.
  • It can perform a shifting process to change the gear ratio of the transmission.
  • It can also execute a lean operation process to operate the engine with a lean air-fuel mixture.
  • During the shifting process, the controller adjusts the air-fuel ratio closer to the stoichiometric ratio.
  • This adjustment occurs only when the shifting process is being executed.

Potential Applications

  • Automotive industry: This technology can be applied to vehicles with internal combustion engines and automatic transmissions, improving their performance and efficiency.

Problems Solved

  • Maintaining optimal air-fuel ratio during shifting: Shifting gears in an automatic transmission can affect the engine's air-fuel ratio. This technology solves the problem by adjusting the ratio closer to the stoichiometric ratio during shifting, ensuring smooth transitions and reducing emissions.

Benefits

  • Improved performance: By adjusting the air-fuel ratio during shifting, the controller ensures smoother gear changes, reducing jerks and improving overall driving experience.
  • Enhanced fuel efficiency: The lean operation process, combined with optimized air-fuel ratio during shifting, helps improve fuel efficiency and reduce fuel consumption.
  • Reduced emissions: Operating the engine with a lean air-fuel mixture and optimizing the ratio during shifting results in lower emissions, contributing to a cleaner environment.


Original Abstract Submitted

A controller is configured to control a vehicle that includes an internal combustion engine and an automatic transmission. The controller is configured to execute a shifting process that switches a gear ratio of the automatic transmission and a lean operation process that operates the internal combustion engine with an air-fuel ratio of the air-fuel mixture in a cylinder leaner than a stoichiometric air-fuel ratio. The controller is further configured to, when executing the shifting process during execution of the lean operation process, set an air-fuel ratio in a case in which the shifting process is being executed to a value closer to the stoichiometric air-fuel ratio than an air-fuel ratio in a case in which the shifting process is not being executed.

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