18447304. MAP CREATING METHOD FOR NOZZLE VANES simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

MAP CREATING METHOD FOR NOZZLE VANES

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Takashi Tsukiyama of Toyota-shi (JP)

MAP CREATING METHOD FOR NOZZLE VANES - A simplified explanation of the abstract

This abstract first appeared for US patent application 18447304 titled 'MAP CREATING METHOD FOR NOZZLE VANES

Simplified Explanation

The method described in the patent application involves creating a map for nozzle vanes by performing an imbalance operation multiple times, changing the specific cylinder each time, and analyzing air-fuel ratio data to determine the opening degree of the nozzle vanes.

• Imbalance operation performed multiple times, changing specific cylinder each time
• Analyzing air-fuel ratio data to calculate air-fuel ratio fluctuation amount
• Determining specific condition based on minimum and maximum values of air-fuel ratio fluctuation amounts
• Storing opening degree map of nozzle vanes meeting specific condition

• • Potential Applications:**

- Automotive industry for engine optimization - Aerospace industry for aircraft engine performance improvement

• • Problems Solved:**

- Efficiently determining optimal opening degree of nozzle vanes - Improving engine performance by adjusting air-fuel ratio based on operating conditions

• • Benefits:**

- Enhanced engine efficiency - Reduced fuel consumption - Improved overall performance of the engine

Original Abstract Submitted

A map creating method for nozzle vanes includes performing an imbalance operation as many times as the number of the cylinders while changing the specific cylinder, creating air-fuel ratio data indicating changes in the air-fuel ratio during the imbalance operation, calculating an air-fuel ratio fluctuation amount for each of pieces of the air-fuel ratio data, determining whether a specific condition is met, the specific condition being that a minimum value among the air-fuel ratio fluctuation amounts is greater than or equal to a first determination value and a difference between the minimum value and a maximum value among the air-fuel ratio fluctuation amounts is less than or equal to a second determination value, and storing, as an opening degree map, the opening degree of the nozzle vanes meeting the specific condition in association with the engine operating state.