GAS EXCHANGE SYSTEM OF INTERNAL COMBUSTION ENGINE CUT-OFF CYLINDERS Russian patent published in 2017 - IPC F02D17/02 F02D21/08 F02M26/20 

FIELD: engine devices and pumps.

SUBSTANCE: gas exchange system of internal combustion engine cut-off cylinders comprises a gas exchanger (10), which inner cavity has at least one two-position control valve. The inner cavity of the gas exchanger is permanently connected in the lower part with supply outlet branch pipes of the cut-off cylinders. With a discharge branch pipe connected to a catalytic collector (9), the inner cavity of the gas exchanger is connected with the possibility of closing the connection. In the upper part of the gas exchanger inner cavity there is an opening communicating with inlet of the gas exchange channel which can be closed by the two-position valve. An outlet opening of the gas exchange channel is connected to insulated volume formed in a receiver body (1) due to the presence of additional internal walls provided with a movable cover. The outlet of the isolated volume is connected to the inlet branch pipes of the cut-off cylinders so as to form a closed gas exchange circuit (21) of the disconnected cylinders.

EFFECT: reduction of throttle losses without increase of friction losses in movable joints of cylinder parts.

2 cl, 9 dwg