Transmitter arrangement for cylinder identification in an internal combustion engine having n cylinders

US5460134A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Karl Ott · Markgröningen, DE
• Helmut Denz · Stuttgart, DE
• Dietmar Flaetgen · Lambach, DE

Key dates

• Filing date: Nov 15, 1993
• Grant date: Oct 24, 1995
• Expiry date: Nov 15, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A transmitter arrangement for cylinder identification in an internal combustion engine having n cylinders, the arrangement comprises a transmitter disc driveable by a crankshaft of the internal combustion engine and having a plurality of angle marks and at least one distinguishable reference mark allocated to a fixed crankshaft angle, a transmitter disc driveable by a camshaft of the internal combustion engine and rotating half as quickly, the transmitter disc having a number of segments corresponding to the cylinder number n, the segments having two different lengths and two interspaces of different lengths between two segments each, two stationary pick-ups allocated to the transmitter discs and transmitting as a function of the marks passing by output signals having low phases and high phases, a control unit evaluating signals from the stationary pick-ups, the angle marks being arranged such that the output signal of each of the pick-ups contains during a first crankshaft revolution a sequence of low phases and high phases differing from that during a second crankshaft revolution, the angle marks being arranged also so that all spacings between same edges of one phase are the sam…