18587969. CONTROLLER FOR HYDROGEN ENGINE simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

From WikiPatents
Jump to navigation Jump to search

CONTROLLER FOR HYDROGEN ENGINE

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Yuto Ikeda of Okazaki-shi (JP)

Koji Umezawa of Susono-shi (JP)

Makoto Yamazaki of Gotenba-shi (JP)

CONTROLLER FOR HYDROGEN ENGINE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18587969 titled 'CONTROLLER FOR HYDROGEN ENGINE

Simplified Explanation:

The patent application describes a controller for a hydrogen engine that manages the addition of urea to the exhaust gas to reduce emissions. The controller adjusts the urea addition based on the amount of urea already present in the system and limits the air-fuel ratio during certain engine conditions.

  • The controller regulates the urea addition valve based on the amount of urea already present in the SCR device.
  • It limits the air-fuel ratio to a specific value during lean-burn conditions.
  • The controller aims to optimize emissions reduction and engine performance.

Key Features and Innovation:

  • Control system for a hydrogen engine with SCR device and urea addition valve.
  • Adjustment of urea addition based on SCR device urea deposition amount.
  • Lean-burn limiting process to optimize air-fuel ratio during specific conditions.

Potential Applications:

  • Automotive industry for hydrogen-powered vehicles.
  • Emission control systems for environmentally friendly transportation.
  • Engine performance optimization in hydrogen engines.

Problems Solved:

  • Reducing emissions in hydrogen engines.
  • Optimizing urea addition for efficient SCR operation.
  • Enhancing engine performance while meeting emission standards.

Benefits:

  • Lower emissions from hydrogen engines.
  • Improved efficiency of SCR system.
  • Enhanced engine performance and longevity.

Commercial Applications:

Hydrogen Engine Controller for Emission Reduction and Performance Optimization

Questions about Hydrogen Engine Controller:

1. How does the controller adjust the urea addition based on the SCR device urea deposition amount? 2. What are the potential benefits of using this controller in hydrogen-powered vehicles?


Original Abstract Submitted

A controller for a hydrogen engine controls a hydrogen engine including a selective catalytic reduction (SCR) device installed in an exhaust passage and a urea addition valve that adds urea to exhaust gas flowing through a portion of the exhaust passage upstream of the SCR device. Processing circuitry of the controller executes a reduction process that causes a urea addition amount of the urea addition valve to be smaller when a urea deposition amount of the SCR device is greater than or equal to a prescribed value than when the urea deposition amount is less than the prescribed value. The processing circuitry executes a lean-burn limiting process that sets an air-fuel ratio of an air-fuel mixture to be burned in the hydrogen engine to a value less than or equal to a prescribed lean-burn limiting value while the reduction process is reducing the urea addition amount.

Retrieved from "http://wikipatents.org/index.php?title=18587969._CONTROLLER_FOR_HYDROGEN_ENGINE_simplified_abstract_(TOYOTA_JIDOSHA_KABUSHIKI_KAISHA)&oldid=253876"