To solve a problem in a conventional intake device wherein control is performed upstream of an intake valve device and fuel spray sticking to the wall surface is not sufficiently prevented, and furthermore a low system cost, the atomization of fuel and short-time conveyance are required for the improvement of performance.
Intake air flowing in from the intake valve device is supplied to be large in quantity (high in speed) to the ignition device side of an internal combustion engine, and flat fuel spray injected from a fuel injection valve is locally injected to the ignition device side of a shade of the intake valve device and led as a tumble flow to the ignition device while vaporization mixing is accelerated in a combustion chamber, to realize stable combustion. By the operation of a skirt for regulating an intake air flow, an intake passage formed of an intake valve and a valve seat is formed large on the side close to the ignition device and small on the side far from the ignition device, i.e., the cylinder side, and the intake flow locally with large flow is fed into the combustion chamber to effectively form tumbles.
NAGANO MASAMI
MAEKAWA NORIYUKI
ABE MOTOYUKI
Next Patent: CONTROL SYSTEM AND STORAGE DEVICE FOR ROTARY MACHINE