Internal combustion engine

Abstract

To provide an internal combustion engine that enables improvement of combustion efficiency and combustion stability in the internal combustion engine including a variable valve train.SOLUTION: An internal combustion engine 1 includes: a variable valve train for changing opening / closing timing of an intake valve; a main combustion chamber 40; an auxiliary combustion chamber 42; a first ignition plug 61 disposed in the main combustion chamber 40; a second ignition plug 62 disposed in the auxiliary combustion chamber 42; and a control device 50 that controls the first ignition plug 61 and the second ignition plug 62. The control device 50 temporarily switches an ignition method to either of SI ignition by using the first ignition plug 61, JET ignition by using the second ignition plug 62 or SI+JET ignition by using the first ignition plug 61 and the second ignition plug 62 along with change of the opening / closing timing of the intake valve by using the variable valve train.SELECTED DRAWING: Figure 2

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