Subchamber diesel engine

Abstract

Provided is a subchamber diesel engine having excellent thermal efficiency and capable of appropriately controlling the ignition timing of fuel supplied to a combustion subchamber. A subchamber diesel engine according to the present invention comprises a main combustion chamber and a combustion subchamber communicated with each other by a communication hole, the diesel engine including: an electrically driven injector for injecting fuel into the combustion subchamber at a random timing; a fuel passage pipe connected to a fuel inlet of the injector; a fuel pump for supplying fuel to the fuel passage pipe; an engine operating state detector for detecting an engine operating state; and a controller, wherein the controller performs a preliminary fuel injection in the first half of an intake stroke, performs a main injection during a compression stroke, and after the main injection, performs an ignition control injection near a compression top dead center.

Dependencies are inferred from the claim text.