18340553. CONTROLLER AND CONTROL METHOD FOR VEHICLE simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)
Contents
CONTROLLER AND CONTROL METHOD FOR VEHICLE
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
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.