BOOST PRESSURE CONTROL METHOD AND BOOST PRESSURE CONTROLLER

To set turbine opening so as to prevent surging of a compressor according to an operational state of a vehicle.SOLUTION: In an electronic control unit, the surging of a compressor is surely prevented by determining that an engine is in an operation region where the compressor is operated in a surge...

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Bibliographic Details
Main Authors GOTO JUNJI, MAKINO SO
Format Patent
LanguageEnglish
Japanese
Published 25.07.2019
Subjects
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:To set turbine opening so as to prevent surging of a compressor according to an operational state of a vehicle.SOLUTION: In an electronic control unit, the surging of a compressor is surely prevented by determining that an engine is in an operation region where the compressor is operated in a surge region S100, calculating a target turbine opening area for prevention of the surging of the compressor using a formula obtained by replacing a variable turbine with a diaphragm type physical model S140, and setting opening of the variable turbine to opening depending on the target turbine opening area S160.SELECTED DRAWING: Figure 2 【課題】車両の動作状況に応じてコンプレッササージ防止可能なタービン開度の設定を可能とする。【解決手段】電子制御ユニットにおいて、エンジンが、コンプレッサをサージ領域で動作せしめる動作領域にあると判定されるとＳ１００、可変タービンを絞り式に基づいた物理モデルに置き換えて得られた演算式を用いてコンプレッササージ防止のための目標タービン開口面積が算出されＳ１４０、可変タービンのタービン開口が目標タービン開口面積に応じた開度に設定Ｓ１６０されることにより、コンプレッササージが確実に防止される。【選択図】図２
Bibliography:Application Number: JP20180005928