Throttle body

US6416035B1 · kind B1 · utility

Assignee

• Mannesmann VDO AG · DE

Inventors

• Peter Welteroth · Altenhimmel, DE
• Gerd Bornmann · Weimar, DE
• Wolfgang Sauerschell · Oberursel, DE
• Nouhad Bachnak · Frankfurt, DE

Key dates

• Filing date: Jul 13, 2000
• Grant date: Jul 9, 2002
• Expiry date: Jul 13, 2020

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D9/107
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In a throttle body with a Torquer drive, the rotor of the drive motor is seated directly on the shaft (14) of the throttle butterfly (16). In order to achieve permanent axial retention of the shaft in combination with simplicity of assembly, the rotor is press-fitted on to the shaft (14), a retaining washer (52) is provided between the throttle butterfly (16) and the rotor, the retaining washer being fixed axially on the shaft (14) or on a throttle housing (12) and engaging with a defined axial play in a gap (32) on the other element, and the two axial, housing-side contact surfaces of the retaining washer (52) being formed by a fastening plate (56) screwed to the housing (12) and by a stop (54) provided on the housing (12). The narrow axial retention device allows rotor-side arrangement for simpler assembly in combination with a short and rigid throttle-butterfly shaft (14).