METHOD AND SYSTEM FOR COMPENSATING FUEL INJECTION AMOUNT

A method and system for correcting a fuel injection amount that injects fuel may include applying a current value for injecting a target fuel amount and injecting fuel under a driving condition in which fuel injection is blocked; determining a frequency analysis value for a pressure signal of the fu...

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Bibliographic Details
Main Author OH JEONG-SANG
Format Patent
LanguageChinese
English
Published 18.12.2020
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:A method and system for correcting a fuel injection amount that injects fuel may include applying a current value for injecting a target fuel amount and injecting fuel under a driving condition in which fuel injection is blocked; determining a frequency analysis value for a pressure signal of the fuel pressure rail when the fuel is injected; determining a fuel amount difference corresponding to adifference value between the frequency analysis value and a reference frequency analysis value stored in a data storage in advance; and correcting a current value of the injector which is applied to inject the target fuel amount to remove the fuel amount difference. 一种用于校正燃油喷射量的喷射燃油的方法和系统，可包括：在燃油喷射受阻的驱动条件下，应用用于喷射目标燃油量的当前值并喷射燃油；当燃油喷射时，确定燃油压力导轨的压力信号的频率分析值；确定与频率分析值和预先存储在数据存储器中的参考频率分析值之间的差异值相对应的燃油量差异；以及校正喷油器的当前值，该当前值被应用于喷射目标燃油量以消除燃油量差异。
Bibliography:Application Number: CN201911172565