Title:
車両用内燃機関
Document Type and Number:
Japanese Patent JP6813389
Kind Code:
B2
Abstract:
Provided is an internal combustion engine of a vehicle. An upper surface of a head cover supporting plug top coils is covered with an engine cover. A plug top coil cover is fixed to the upper surface of the head cover. Thereby, an upper passage is formed between the engine cover and the plug top coil cover, and a lower passage is formed between the head cover and the plug top coil cover. The lower passage includes a labyrinth defined by first wall parts provided for the head cover and second wall parts provided for the plug top coil cover. Since it becomes difficult for high-temperature air to flow along the lower passage facing the plug top coils, and easy for it to flow along the upper passage away from the plug top coils, the overheating of the plug top coils caused by contact with the high-temperature air is suppressed.
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Inventors:
Ikeda Daichi
Tomohiko Yoshino
Tomohiko Yoshino
Application Number:
JP2017033590A
Publication Date:
January 13, 2021
Filing Date:
February 24, 2017
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F02P15/00; F02B77/11; F02B77/13
Domestic Patent References:
| JP2009150243A | ||||
| JP2004068721A |
Attorney, Agent or Firm:
Ochiai Patent Office