18484104. ENGINE SYSTEM simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)
Contents
ENGINE SYSTEM
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
Susumu Araki of Toyota-shi (JP)
Takayuki Omachi of Nisshin-shi (JP)
ENGINE SYSTEM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18484104 titled 'ENGINE SYSTEM
Simplified Explanation: The patent application describes an engine system with a control device that manages fuel supply to different cylinders to warm up a catalyst efficiently.
- The engine system includes first and second cylinders, a catalyst in the exhaust passage, and a control device.
- The control device has a fuel cut control unit that stops fuel supply to the first cylinder and increases fuel supply to the second cylinder to warm up the catalyst.
- An injection amount control unit increases fuel injection in the second cylinder during the fuel cut process.
- An injection timing control unit advances fuel injection timing in the second cylinder to optimize combustion during the fuel cut process.
Key Features and Innovation:
- Specific cylinder fuel cut process for catalyst warm-up.
- Increased fuel injection amount in the second cylinder.
- Advanced fuel injection timing in the compression stroke of the second cylinder.
Potential Applications: This technology can be applied in automotive engines to improve catalyst warm-up efficiency and reduce emissions.
Problems Solved: Efficient warming up of the catalyst in the exhaust system. Optimizing fuel injection for improved combustion during warm-up.
Benefits: Reduced emissions. Improved fuel efficiency. Enhanced catalyst performance.
Commercial Applications: Title: Advanced Engine Control System for Emission Reduction. This technology can be utilized in the automotive industry for cleaner and more efficient engines, appealing to environmentally conscious consumers and meeting stringent emission regulations.
Prior Art: Prior research in engine control systems for catalyst warm-up and emission reduction.
Frequently Updated Research: Ongoing studies on optimizing fuel injection strategies for catalyst warm-up in engine systems.
Questions about Engine Control System for Emission Reduction: 1. How does the specific cylinder fuel cut process contribute to catalyst warm-up efficiency? 2. What are the potential long-term benefits of implementing this advanced engine control system in vehicles?
Original Abstract Submitted
An engine system includes an engine including first and second cylinders, a catalyst provided in an exhaust passage of the engine, and a control device for the engine. The control device includes a fuel cut control unit configured to execute a specific cylinder fuel cut process of stopping supply of fuel to the first cylinder and supplying fuel to the second cylinder when there is a request to warm up the catalyst, an injection amount control unit configured to increase a fuel injection amount in the second cylinder at a predetermined increase rate during execution of the specific cylinder fuel cut process, as compared to a case where the specific cylinder fuel cut process is stopped, and an injection timing control unit configured to advance a fuel injection timing in a compression stroke of the second cylinder during execution of the specific cylinder fuel cut process is stopped.
