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Patent Searching and Data


Title:
GAS ENGINE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/115864
Kind Code:
A1
Abstract:
A device for controlling a gas engine system calculates the lag computation value of the knocking incidence rate on the basis of the pressure inside a cylinder, and determines a primary target ignition period on the basis of the difference in the incidence rate, which is obtained by subtracting the lag computation value of the knocking incidence rate from the desired incidence rate. When the incidence rate difference is positive and the ignition period difference, which is obtained by subtracting the previous ignition period from the primary target ignition period, does not exceed a conversion value of a first advance rate, the control device sets the primary target ignition period as the current ignition period. When the incidence rate difference is positive and the ignition period difference exceeds the conversion value of the first advance rate, the control device determines whether or not a rapid advance criterion is met. When the rapid advance criterion is not met, the control device sets the secondary target ignition period, which is the sum of the previous ignition period and the first advance rate, as the current ignition period. When the rapid advance criterion is met, the control device determines the current ignition period so that a second advance rate will be greater than the first advance rate.

Inventors:
HIRAYAMA TOWA
IWASAKI HIDEKAZU
ISHII HIROYOSHI
NONAKA YOSUKE
KIZUKA TOMOAKI
FUJIHARA SHIGEHARU
FUKAO SATORU
Application Number:
PCT/JP2016/089183
Publication Date:
July 06, 2017
Filing Date:
December 28, 2016
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F02P5/152; F02D45/00; F02M21/02
Foreign References:
JP2010084681A2010-04-15
Other References:
See also references of EP 3399178A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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