公开(公告)号：US20170335725A1

公开(公告)日：2017-11-23

申请号：US15533083

申请日：2016-01-14

Applicant: MAZDA MOTOR CORPORATION

Inventor： Tomomi WATANABE ,  Nobuyuki FURUICHI ,  Sho SHIMAMOTO ,  Mikinori OHASHI ,  Shigeyuki HIRASHITA

IPC: F01L1/344 ,  F02D19/08 ,  F02D41/06

CPC classification number: F01L1/3442 ,  F02D13/02 ,  F02D19/08 ,  F02D19/084 ,  F02D41/064 ,  F02D41/065

Abstract: In a flexible-fuel engine capable of using fuel containing alcohol as fuel to be combusted in a cylinder, the geometric compression ratio is set to 12 or more, the engine is started by using fuel containing alcohol, an intake valve closing timing at an engine start time is set to an advance angle side than a first reference timing being a timing corresponding to a most retarded angle position out of intake valve closing timings capable of starting the engine in combusting fuel of alcohol 100% in the cylinder at a first intake temperature, and is set to a timing on a retarded angle side than a second reference timing being a timing corresponding to a most advanced angle position out of intake valve closing timings capable of avoiding pre-ignition in combusting fuel of gasoline 100% at an engine start time at a second intake temperature.