公开(公告)号：US11002215B2

公开(公告)日：2021-05-11

申请号：US16811142

申请日：2020-03-06

Applicant: Mazda Motor Corporation

Inventor： Kazuhiro Takemoto ,  Michio Ito ,  Masanari Sueoka ,  Kazuhiro Nishimura ,  Kouji Hadama ,  Masataka Sumita ,  Masami Nishida

IPC: F02D41/40 ,  F02B77/04 ,  F02F3/28 ,  F02M59/20 ,  F02D41/38

Abstract: A controller for controlling a fuel injection valve and a fuel pressure adjustment mechanism integrates a deposition amount of deposits per unit time, and estimates a deposition amount of deposits on an injection hole of the fuel injection valve. The controller causes the fuel pressure adjustment mechanism to increase a fuel pressure, when the estimated deposition amount exceeds a predetermined value, and corrects the unit deposition amount acquired by the deposition amount estimation according to the set fuel injection timing of the fuel injection valve. The controller corrects such that as compared with the unit deposition amount when the fuel injection timing is set to a first timing away from a top dead center of the piston by a first period, the unit deposition amount decreases when the fuel injection timing is set to a second timing away by a second period longer than the first period.

公开(公告)号：US10883438B2

公开(公告)日：2021-01-05

申请号：US16445097

申请日：2019-06-18

Applicant: Mazda Motor Corporation

Inventor： Yuta Masuda ,  Masayoshi Higashio ,  Yugou Sunagare ,  Michio Ito ,  Kenko Ujihara ,  Yuto Matsushima

IPC: F02D41/30 ,  F02P5/145 ,  F02B1/10 ,  F02D41/00 ,  F02D37/02 ,  F02B1/14 ,  F02B11/00

Abstract: A control system for a compression ignition engine is provided, which includes a combustion chamber, a throttle valve, an injector, an ignition plug, a sensor, and a controller. A changing module outputs a signal to the throttle valve so that an air amount increases more than before the change demand, outputs to the injector a signal to increase the fuel amount according to the increase in the air amount so that an air-fuel ratio of the mixture gas becomes a stoichiometric air-fuel ratio or a substantially stoichiometric air-fuel ratio, and performs a torque adjustment so that an increase of the engine torque caused by the increase in the fuel amount is reduced. When the air amount is determined to have reached a given amount, the changing module ends the increasing of the fuel amount and the torque adjustment, and permits that a second mode module starts the second mode.