Device and method for estimation of an engine torque

US7321822B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Thorsten Schmidt · Milpitas, US
• Winfried Schultalbers · Meinersen, DE
• Henning Rasche · Gaimersheim, DE
• Hermann Fehrenbach · Herxheim, DE
• Kurt Bluhm · Neckarsulm, DE
• Carsten Hohmann · Warstein, DE

Key dates

• Filing date: Nov 5, 2003
• Grant date: Jan 22, 2008
• Expiry date: Feb 27, 2024

Classification

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

Abstract

Alternating torque {tilde over (M)}kv(φ) or the mean indicated pressure Pml is to be determined from the angular velocity ω from the engine speed, for engine management, for example. Charge pressure compensation (5) must be effected in order for a usable result to be obtained. By preference sensor wheel error compensation (2) and inertial force compensation (4) are also effected. The mean indicated pressure Pml is obtained from the alternating torque {tilde over (M)}v(φ) in a characteristic diagram.