エンジン制御システム

Japanese Patent JP7029348

B2

To circulate exhaust air by properly switching a device and a bypass passage according to a corrosion rate of each of acid components included in condensate water.SOLUTION: An engine control system (10) includes a bypass passage (33), a selector valve (34) for selecting a first state in which exhaust air is circulated to an EGR cooler (32) and not circulated to the bypass passage, and a second state in which the exhaust air is circulated to the bypass passage without circulated to the EGR cooler, and an ECU (40). The ECU calculates each correction hydrogen ion concentration by multiplying each hydrogen ion concentration calculated from concentration of each acid component included in condensate water of the exhaust air, by a coefficient according to a corrosion rate of each acid component, calculates correction pH of the condensate water on the basis of the total correction hydrogen ion concentration obtained by adding the correction hydrogen ion concentrations, selects the second state by the selector valve when the correction pH is a prescribed pH which causes corrosion of the EGR cooler, and selects the first state by the selector valve when the correction pH is not the prescribed pH.SELECTED DRAWING: Figure 1

▲瀬▼耒 徹朗
Kenichi Tomomatsu
Shuhei Yamamoto
Naoki Watanabe
Shusuke Otsuki

JP2018092564A

March 03, 2022

May 11, 2018

Click for automatic bibliography generation  

株式会社ＳＯＫＥＮ

F02M26/50; F01N3/20; F01N3/24; F02B39/10; F02D21/08; F02D23/00; F02D41/02; F02D43/00; F02M26/05; F02M26/25

JP2008196368A
JP2009062924A
JP9256915A
JP7324653A
JP2011140922A
JP2015209814A

Yamada Tsuyoshi
Kyoko Hino
Hiroshi Matsuda
Yusuke Kita

Previous Patent: Information processing methods, programs and information processing equipment

Next Patent: Wireless binding machine