METHOD OF MANUFACTURING THROTTLE VALVE UNIT

PROBLEM TO BE SOLVED: To provide a method of manufacturing a throttle valve, decreasing frictional resistance to prevent early abrasion of a bearing part between a throttle valve casing and a throttle valve shaft. SOLUTION: This method of manufacturing a throttle valve unit includes steps of: (1) in...

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Bibliographische Detailangaben
Hauptverfasser:	SCHONDER FRANK, LORENZ CRISTIAN, ZOELCH ROLAND
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of manufacturing a throttle valve, decreasing frictional resistance to prevent early abrasion of a bearing part between a throttle valve casing and a throttle valve shaft. SOLUTION: This method of manufacturing a throttle valve unit includes steps of: (1) injection molding a throttle valve casing in a first cavity from a first plastic material; (2) fitting a bearing bush 5 containing metal material in the casing while forming friction kinematic contraposition between the bearing bush and the casing; (3) transferring the casing obtained by the above steps (1), (2) to a second cavity spatially separated from the first cavity; and (4) injection molding a movable throttle flap 2 having a throttle valve stem from a second plastic material inside the casing in the second cavity. COPYRIGHT: (C)2006,JPO&NCIPI