Patent · US Active

Method for operating a waste heat utilization device

US9879569B2 · kind B2 · utility

1Cited by

1References

9Claims

0Family size

Assignee

Daimler AG · DE

Inventors

Andreas Franke · Wuppertal, DE
Jan Gaertner · Stuttgart, DE
Thomas Koch · Remchingen, DE
Dominik Mall · Gundelsheim, DE

Key dates

Filing date	Jan 14, 2014
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Sep 29, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method and a device for operating a waste heat utilization device for an internal combustion engine of a motor vehicle is disclosed. The waste heat utilization device contains a waste heat utilization circuit in which a working medium circulates. A conveyor, an evaporator, an expansion machine, and a condenser are disposed in the waste heat utilization circuit. A basic adjustment of the waste heat utilization circuit is provided, which as a function of a heat input into the working medium adjusts the mass flow rate at the conveyor and/or the ratio between high pressure and low pressure at the expansion machine. In addition, a pilot control is provided which recognizes a change of the operating point of the internal combustion engine and, when the operating point is changed, controls the condensation output of the condenser in accordance with a mass distribution of the working medium in the waste heat utilization circuit optimized to the new operating point.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.