Intake apparatus for an internal combustion engine

US5168849A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jurgen Gerhardt · Ditzingen, DE
• Wolfgang Schafer · Düren, DE
• Helmut Bassler · Waiblingen, DE
• Heinz Ehrentraut · Stuttgart, DE
• Friedrich Harterich · Gerlingen, DE
• Klaus Kaiser · Markgröningen, DE

Key dates

• Filing date: Mar 27, 1992
• Grant date: Dec 8, 1992
• Expiry date: Mar 27, 2012

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2009/0294
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention is directed to an intake apparatus for an internal combustion engine with the apparatus including an intake pipe defining a longitudinal axis and a throttle flap mounted on the intake pipe, the throttle flap including a shaft having a shaft radius (r), a throttle flap having a thickness (t) and being mounted on the shaft to be rotatable through a displacement angle, and the shaft having a diameter (2r) greater than the thickness (t); a potentiometer operatively connected to the throttle flap for detecting the displacement angle thereof; a full-load stop for fixing the displacement angle of the flap at full load; the throttle flap being adjusted to a stop angle AW of the throttle flap by impacting on the full-load stop pursuant to the relationship: EQU (2) (KETW)+(2) (AETW).congruent.(2) (WSW)-DAW wherein: WSW is a shaft shading angle, the angle of the throttle flap at which points on the throttle flap disposed farthest away from the shaft lie at a distance from the longitudinal axis equal to the radius (r); KETW is a permissible corresponding tolerance angle corresponding to the tolerance of the potentiometer; AETW is a permissible tolerance angle for the stop of the …