TH42299B - Secondary air control valve layout structure for motorcycle exhaust emissions - Google Patents

Abstract

DC60 (30/05/56) in a motorcycle where a fuselage frame including the main frame extends towards the rear, down from the head tube, where the engine is positioned under the frame. digit with line along the axis of The forward tilt cylinder is suspended from the frame of the fuselage. and an air purifier and a suction system that Including the carburetor is placed above the engine. In this motorcycle, the secondary air tandem valve (48) controls the transmission of secondary air for exhaust gases to the exhaust port. The engine cell (E) is placed between the motor cell (50) mounted to the top of the engine (E) and carburetor (38), and is also positioned between the engine (E) and main body (13). ) With this configuration, it is possible to position the secondary air control valve using a sealed gap. effectively between the main frame and the engine and therefore will reduce the length of the pipeline. secondary air In the motorcycle to provide the frame of the body that includes the main frame that extends to the side. Finally, down from the head tube, the engine is positioned under the main frame with the axial line of the The forward tilt cylinder is suspended from the frame of the fuselage. and an air purifier and a suction system that Including the carburetor is placed above the engine. In this motorcycle, the tandem valve Secondary air (48) for controlling the transmission of secondary air for exhaust gases to the exhaust port. of the engine (E) is placed between the motor cells (50) mounted to the top of the Engine (E) and carburetor (38) and is also placed between engine (E) and main body (13). With this configuration, it is possible to position the secondary air control valve by using The gap is closed effectively between the main frame and the engine and therefore will reduce the length of the pipeline. secondary air

Claims (3)

Disclaimers (all) that will not appear on the advertisement page: 1.Secondary air control valve layout structure for vehicle exhaust emissions. A motorcycle with the engine (E) placed under the main frame (13) with the axial line of the cylinder. The forward slanting cylinder (C1) is suspended from the body frame (F) that includes the main scaffold (13) leading outward, downward from the header tube (12); And an air cleaner (37) was placed over the engine (E), where Secondary air control valve (48) for controlling the supply of Secondary air for exhaust gas emissions to the engine exhaust port (44) (E) is placed between Motor cell (50) installed to the upper part of the engine (E) and air cleaner (37), and Between the engine (E) and the main frame (13), and the secondary air cleaner (79), which is also installed to One side of the main frame (13), and which is connected to the source side of the secondary air control valve (48), is positioned opposite the secondary air control valve (48) across the center line (C2) passing through. The center of the main frame (13) in the width direction 2.Secondary air control valve design structure for the exhaust emissions in bicycles) motor. According to claim 1, where the secondary air cleaner (79) is connected to the leading side, The secondary air control valve (48) is positioned opposite the carburetor (38) relative to the center line (C2) that passes through the center of the main frame. (13) as above in the direction along the width (1 3. A secondary air control valve layout structure for motorcycle exhaust emissions in accordance with claim 1, where the secondary air intake manifold (86) is used mainly for connecting such secondary air control valve (48) to the exhaust port (44) The aforementioned (E) engine is positioned opposite to The carburettor (38), in relation to The center line (C2) that passes through the center of the main frame (13) in the width direction).