TH90486A - Engine intake system - Google Patents

Abstract

DC60 (18/05/54) The engine intake system includes a bypass (15) that bypasses the throttle valve (7) and is connected to the intake path (2) and a bypass valve (20) for controlling the opening level of the bypass (15). Part of the bypass (15) includes an inlet (15a) which is provided in the throttle body (1) so that the inlet (15a) opens in the intake path (2) at the aft position of the throttle valve (7), a valve port (15b) which is provided in the throttle body (1) to accommodate the bypass valve (20) in its place, and an outlet (15f) which is provided in the throttle body (1) so that the outlet (15f) opens in the intake path (2) at the aft position of the throttle valve (7). The valve port (15b) is provided on the opposite side of the outlet (15f) with the throttle valve (7) inserted between them and at the aft position. Above the outlet (15f) and parallel to the shaft support holes (5, 6) that support the valve shaft (7a) of the throttle valve (7), a small engine intake system is provided in which the engine's backburning has difficulty reaching the bypass valve and in which it has an excellent productivity rate. The engine intake system includes a bypass (15) that bypasses the throttle valve (7) and is connected. With the intake path (2) and the bypass valve (20) for controlling the opening level of the bypass (15), part of the bypass (15) includes the inlet (15a), which is provided in the throttle body (1) so that the inlet (15a) opens in the intake path (2) at the upstream position of the throttle valve (7), the valve port (15b), which is provided in the throttle body (1) to accommodate the bypass valve (20) in place, and the outlet (15f), which is provided in the throttle body (1) so that the outlet (15f) opens in the intake path (2) at the downstream position of the throttle valve (7). The valve port (15b) is provided on the opposite side of the outlet (15f), with the throttle valve (7) inserted between them. And at a position above the outlet (15f) and parallel to the shaft support holes (5, 6) that support the valve shaft (7a) of the throttle valve (7), thus a small engine intake system is provided in which the engine's backburning has difficulty reaching the bypass valve and in which it has an excellent productivity rate.

Claims (3)

1. Engine intake system, which includes Throttle housing (1) including the horizontal intake manifold (2) and shaft support holes (5, 6) that have been formed in it. Throttle valve (7), which is supported on its valve shaft (7a) in the shaft support hole (5, 6) to open and close the intake (2) bypass (15), which diverts through the throttle valve. (7) and was connected to the intake path (2), the divergence valve (20) for controlling the bypass opening level (15) and the actuator (27) for the actuation of the deflection valve (20), where at least Finally, part of the bypass (15) consists of an inlet (15a) provided in the throttle housing (1) to allow the inlet (15a) to open in the intake path (2) at Position on the origin of the throttle valve (7) The valve hole (15b) is provided in the throttle body (1) to fit the deflection valve (20) in place. And an outlet (15f), which was provided in the throttle body (1) to allow the outlet (15f) to open in the intake path (2) at the end-side position of the throttle valve (7), and where The valve hole (15b) is arranged on the opposite side from the outlet port (15f) by the throttle valve (7), which is inserted between it by the valve hole (15b) being arranged over the axis (A) of the vapor path. Well (2) at the location above the outlet hole (15f) and parallel to the shaft support hole (5, 6) and where the outlet hole (15f) is provided parallel to the shaft support hole (5,6). The throttle sensor (11) is attached to the side wall of the throttle body (1) and the level is measured. The opening of the throttle valve (7) and 2.The engine intake system according to claim 1, with its unique characteristics, the inlet (15a) is set to open at the top of the source end surface of the throttle housing (1). 3.The engine intake system according to claim 1 or 2, characterized by the actuator (27) and the sensor box (10), which retained the throttle sensor (11), was attached to the ground. The tip surface of the throttle body (1) with the tip surface facing in the same direction