Kubota Corporation

Kiichi Suehiro

Hiroki Oso

Yasushi Kobayashi

Akira Tamura

Rina Kaneko

Shingo Matsunobu

Koji Nakakita

Naotaro Nagai

Yuki Tagashira

A diesel engineincludes an injectorthat uses a solenoid to directly drive a needle valve and inject a fuel and an injector control devicethat controls the driving by the injector. The injector control deviceincludes a charge voltage control circuit, a storage unitthat stores a correction value related to an injection amount of the fuel injected from the injector, and an injector control circuitthat controls the driving by the injectoron the basis of each of a voltage supplied from the charge voltage control circuitand the correction value stored in the storage unit. The correction value is set according to a voltage applied to a terminal of the injector control deviceconnected to a load when a current starts to flow in the load connected to the injector control device

Diesel engine, diesel engine manufacturing method, and diesel engine injection-amount correction system

Provided is an electronic fuel injection type diesel engine capable of performing precise electronic fuel injection control. A fuel injector includes a main body portion having a large diameter, a nozzle portion having a small diameter, and a pressing surface formed at a step portion between the main body portion and the nozzle portion, in which the nozzle portion of the fuel injector is inserted from an inside of a sleeve into an inside of an insertion hole, the fuel injector is pressed toward a vortex chamber by a pressing force, and the pressing force applied to the fuel injector is received by a pressure receiving surface of the sleeve from the pressing surface of the fuel injector via the washer.

Electronic fuel injection type diesel engine

Provided is an injector control device which is capable of setting a preceding injection amount to a fuel injection amount that is less than a main injection amount, while suppressing situations where preceding injections executed prior to a main injection in multi-stage injection are eliminated. An injector control deviceincludes: an injection amount setting unitthat sets, as a total injection amount, a total of fuel injection amounts in multi-stage injection in a single cycle, and sets, as a preceding injection amount, a fuel injection amount in a preceding injection executed prior to a main injection in the multi-stage injection; an energization period setting unitthat sets an energization period of an injectorbased on the fuel injection amounts set by the injection amount setting unit; and an injector driving unitthat controls driving of the injectorbased on the energization period set by the energization period setting unit. The injection amount setting unitsets a fuel injection amount that is a predetermined percentage of the total injection amount as the preceding injection amount.

Injector control device

Growing community of inventors

Sakai, Japan

Kiichi Suehiro