Fuel injection state analysis device - 株式会社デンソー

Title:

Fuel injection state analysis device

Document Type and Number:

Japanese Patent JP6056666

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a fuel injection state analysis device capable of suppressing decrease of an analysis opportunity while reducing a processing load of an analysis part.SOLUTION: A fuel injection system comprises: a fuel injection valve 10 which is provided in each of cylinders (#1-#4) of a multi-cylinder internal combustion engine and injects fuel held in a pressure storage state in a pressure storage container 42; and a fuel pressure sensor 20 for detecting fuel pressure within a fuel passage 11a from a discharge port 42a of the pressure storage container 42 to an injection hole 11b of the fuel injection valve 10. A fuel injection state analysis device 30 comprises: an analysis part 34 for analyzing an injection state of fuel by the fuel injection valve 10 on the basis of an extraction value obtained by sampling a detection value of the fuel pressure sensor 20 at a preset sampling rate; and a rate change part 34 for changing the sampling rate so as to finish analysis by the analysis part 34 while successively injecting the fuel from the fuel injection valves 10 of the cylinders.

Inventors:

Nakai Yudai

Application Number:

JP2013120695A

Publication Date:

January 11, 2017

Filing Date:

June 07, 2013

Export Citation:

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