Auxiliary chamber gas supplying device for gas engine

摘要

In an auxiliary chamber gas supplying device for a gas engine including an auxiliary chamber gas supply path (5, 14, 28, and 29) through which fuel gas is supplied to an auxiliary chamber (4), the auxiliary chamber gas supply path is connected to a fuel gas supply source (24) through a solenoid valve (23), and when the solenoid valve is opened, the fuel gas, in an amount corresponding to an opened period of the solenoid valve, is supplied from the fuel gas supply source to the auxiliary chamber through the auxiliary chamber gas supply path, and the opened period of the solenoid valve is set in such a manner that a predetermined amount of fuel gas is supplied to the auxiliary chamber, and a restriction unit (30) that extends the opened period of the solenoid valve is formed in the auxiliary chamber gas supply path (5, 14, 28, and 29).

主权项

1. An auxiliary chamber gas supplying device for a gas engine comprising:
a main chamber defined between a piston and a cylinder head; an auxiliary chamber in communication with the main chamber through an injection hole; an auxiliary chamber gas supply path through which fuel gas is configured to be supplied to the auxiliary chamber; and an ignition plug disposed to face the auxiliary chamber, wherein the auxiliary chamber gas supply path is connected to a fuel gas supply source through a solenoid valve, and when the solenoid valve is opened, the fuel gas, in an amount corresponding to an opened period of the solenoid valve, is configured to be supplied from the fuel gas supply source to the auxiliary chamber through the auxiliary chamber gas supply path and the fuel gas supplied to the auxiliary chamber is configured to be ignited by the ignition plug, and a restriction unit is formed in the auxiliary chamber gas supply path, and an amount of fuel gas supplied to the auxiliary chamber per unit time is configured to be reduced by setting the opened period of the solenoid valve required for supplying a predetermined amount of fuel gas to the auxiliary chamber to be longer than in a case where the restriction unit is not formed in the auxiliary chamber gas supply path, wherein the restriction unit is a check valve disposed in the auxiliary chamber gas supply path, and a flow coefficient of the check valve is in a range between 0.05 and 0.3.