Arrangement for determining the engine speed and an additional operating characteristic variable of an internal combustion engine by means of a sensor

US5216881A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jurgen Anlauf · Göppingen, DE
• Walter Dinkelacker · Stuttgart, DE
• Gerhard Haaga · Owen, DE
• Alexander Schwarz · Ogdensburg, US
• Raymond Sieg · Eßlingen, DE
• Ulrich Schlienz · Bühl, DE

Key dates

• Filing date: Dec 21, 1990
• Grant date: Jun 8, 1993
• Expiry date: Dec 21, 2010

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/1015
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to an arrangement which permits operating characteristic variables such as the crankshaft rotational speed and the content of exhaust gas components to be determined in the workshop. The sensor is mounted so as to be stationary in the exhaust gas system or is only intermittently mounted in this system. According to one arrangement of the invention, the exhaust gas sensor includes a first device which receives the pressure of the exhaust gas of the engine. In this way, the crankshaft rotational speed can be arrived at. A second device is arranged in the exhaust gas sensor which has an output signal which is a measure for the content of an exhaust gas component. A further embodiment of the arrangement of the invention includes an exhaust gas sensor having a first device which is configured as a fault meter, temperature sensor or as a hot wire flow meter. Other devices can be utilized to detect further variables of the exhaust gas and evaluate the same.