Title:
内燃機関制御方法及び内燃機関制御装置
Document Type and Number:
Japanese Patent JP6835290
Kind Code:
B2
Abstract:
An internal combustion engine control method controls an internal combustion engine equipped with an exhaust gas temperature variation factor unit that causes variations in the temperature of exhaust gas of the internal combustion engine, an exhaust heat recovery device that is disposed in an exhaust passage downstream of the exhaust gas temperature variation factor unit in the flow direction of the exhaust gas and that recovers the heat from the exhaust gas into a refrigerant that cools the internal combustion engine, and a refrigerant flow rate adjustment unit that adjusts the flow rate of the refrigerant that passes through the exhaust heat recovery device. The internal combustion engine control method comprises estimating a boiling margin, which is a parameter related to the thermal margin when the refrigerant boils in the exhaust heat recovery device, and determining whether to execute a boiling avoidance process in accordance with the boiling margin.
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Inventors:
Tohru Fukami
Kentaro Kawahara
Yoshifumi Iribe
Kentaro Kawahara
Yoshifumi Iribe
Application Number:
JP2020507149A
Publication Date:
February 24, 2021
Filing Date:
March 19, 2018
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F01P7/16; F01N3/023; F01N5/02
Domestic Patent References:
| JP2008274885A | ||||
| JP2013249794A | ||||
| JP2017008868A |
Foreign References:
| WO2015125260A1 |
Attorney, Agent or Firm:
Goto Patent Office