The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2020
Filed:
Jul. 11, 2016
Avl List Gmbh, Graz, AT;
Iveco S.p.a., Turin, IT;
Fpt Industrial S.p.a., Turin, IT;
Mahle Amovis Gmbh, Berlin, DE;
Klemens Neunteufl, Graz, AT;
Oswald Lackner, Fehring, AT;
Gerald Gradwohl, Graz, AT;
Michael Bucher, Berlin, DE;
Fabio Cococcetta, Zürich, CH;
Ivan Calaon, Turin, IT;
Michael Glensvig, Graz, AT;
AVL LIST GMBH, Graz, AT;
IVECO S.P.A., Turin, IT;
FPT INDUSTRIAL S.P.A., Turin, IT;
MAHLE AMOVIS GMBH, Berlin, DE;
Abstract
The invention relates to a method for controlling a waste-heat utilization system () for an internal combustion engine () of a vehicle, wherein the waste-heat utilization system () has at least one expander (), which can transmit torque to the internal combustion engine () and which can be bypassed by means of a bypass flow path (), at least one evaporator (), and at least one pump () for an operating medium, and wherein at least the evaporator () is arranged in the region of the exhaust gas system () of the internal combustion engine (). The expander (), which can be operated in several operating modes, has a driving connection to a secondary drive shaft () of the internal combustion engine in at least one operating mode. An operating mode of the waste-heat utilization system () is selected by a control device () on the basis of at least one input variable and the waste-heat utilization system () is operated in said operating mode. The input variable is selected by the control device () from the group consisting of expander rotational speed (n), gear information (GI), coasting information (CI), and pressure (p, p) and temperature (T, T) of the operating medium upstream or downstream of the expander (). A first operating mode () is associated with a warm-up phase of the expander () and a second operating mode () is associated with a normal operating phase of the expander (). In the first operating mode, the bypass flow path () is opened and the expander () is not connected to a secondary drive shaft () of the internal combustion engine (). In the second operating mode, the bypass flow path () is closed and the expander () is connected to the internal combustion engine (). The second operating mode () is selected if the pressure (p) and/or the temperature (T) of the operating medium downstream of the expander () exceeds a defined value.