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1. (WO2018088075) PUMP MODULE AND EVAPORATED FUEL TREATMENT DEVICE

Pub. No.:    WO/2018/088075    International Application No.:    PCT/JP2017/036180
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Thu Oct 05 01:59:59 CEST 2017
IPC: F02M 25/08
Applicants: AISAN KOGYO KABUSHIKI KAISHA
愛三工業株式会社
Inventors: ASANUMA Daisaku
浅沼 大作
Title: PUMP MODULE AND EVAPORATED FUEL TREATMENT DEVICE
Abstract:
[Solution] A pump module may be installed in an evaporated fuel treatment device, which carries out a purge treatment for supplying evaporated fuel in a fuel tank to an intake passage of an internal combustion engine via a purge passage. The pump module may be provided with a pump for delivering evaporated fuel in the purge passage to the intake passage and a pump control unit for controlling the driving of the pump. During the purge treatment, the pump control unit may bring the speed of the pump to or below a speed threshold value until a prescribed time period elapses after the purge treatment has been initiated, and the pump control unit may cause the pump to be driven at a speed equal to or greater than the speed threshold value after the prescribed time period has elapsed.