Method for closed-loop power control of a road finishing machine or feeder and a road finishing machine or feeder comprising the same

US8538639B2 · kind B2 · utility

Assignee

• Joseph Voegele AG · DE

Inventors

• Tobias Noll · Neckartailfingen, DE
• Ralf Weiser · Ladenburg, DE

Key dates

• Filing date: Nov 17, 2010
• Grant date: Sep 17, 2013
• Expiry date: Nov 1, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H61/47
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In the hydrostatic working operation of a road finishing machine or a feeder which comprises a primary power plant with an internal combustion engine (M) and several hydraulic variable displacement pumps, which are hydraulically connected to hydraulic motors of working components, and which possesses a computerized control device, the internal combustion engine is operated within its engine-specific characteristic map in response to the load condition by dynamic speed adaptation in a characteristic zone with optimal consumption, and the displacements (VsHP) of the variable displacement pumps are simultaneously automatically adapted for keeping the volume flow rates for the hydraulic motors constant. In the road finishing machine or the feeder, in the control device or connected to the same, a control loop for evaluating the load condition of the internal combustion engine and the current displacement of the variable displacement pumps is provided, by means of which the speed can be dynamically adjusted to or in a characteristic zone with optimal consumption, and simultaneously with the adjustment of the speed for keeping the volume flow rates for the hydraulic motors constant, the …