EXHAUST PRESSURE DETECTING DEVICE AND CONTROL DEVICE FOR ENGINE

PROBLEM TO BE SOLVED: To accurately estimate an exhaust pressure even at transient time, in the case of providing an EGR device and a variable displacement turbocharger. SOLUTION: This control device is provided with a variable displacement turbocharger having a variable nozzle and an EGR valve, whi...

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Bibliographic Details
Main Authors ITOYAMA HIROYUKI, SHIRAKAWA AKIRA
Format Patent
LanguageEnglish
Published 26.12.2000
Edition7
Subjects
BLASTING
COMBUSTION ENGINES
COMBUSTION ENGINES IN GENERAL
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
INTERNAL-COMBUSTION PISTON ENGINES
LIGHTING
MECHANICAL ENGINEERING
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To accurately estimate an exhaust pressure even at transient time, in the case of providing an EGR device and a variable displacement turbocharger. SOLUTION: This control device is provided with a variable displacement turbocharger having a variable nozzle and an EGR valve, which can control an EGR amount, in a turbine. Here, an intake air amount Qas0 is detected by a detection means 81, a load of an engine is detected by a detection means 82, an effective area equivalent value Avnt of the variable nozzle is detected by a detection means 83, and an exhaust temperature Texh is detected by a detection means 84. These four elements are used to estimate an exhaust pressure Pexh by an estimation means 85.
Bibliography:Application Number: JP19990168432