METHOD FOR CONTROLLING A WASTE-HEAT UTILIZATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

WIPO Patent Application WO2017008094

A1

The invention relates to a method for controlling a waste-heat utilization system (20) for an internal combustion engine (10) of a vehicle, wherein the waste-heat utilization system (20) has at least one expander (22), which can transmit torque to the internal combustion engine (10) and which can be bypassed by means of a bypass flow path (25), at least one evaporator (21), and at least one pump (24) for an operating medium, and wherein at least the evaporator (21) is arranged in the region of the exhaust gas system (11) of the internal combustion engine (10). The expander (22), which can be operated in several operating modes, has a driving connection to a secondary drive shaft (19) of the internal combustion engine in at least one operating mode. An operating mode of the waste-heat utilization system (20) is selected by a control device (30) on the basis of at least one input variable and the waste-heat utilization system (20) is operated in said operating mode. The input variable is selected by the control device (30) from the group consisting of expander rotational speed (n), gear information (GI), coasting information (CI), and pressure (p1, p2) and temperature (T1, T2) of the operating medium upstream or downstream of the expander (22). A first operating mode (1) is associated with a warm-up phase of the expander (22) and a second operating mode (2) is associated with a normal operating phase of the expander (22). In the first operating mode, the bypass flow path (25) is opened and the expander (22) is not connected to a secondary drive shaft (19) of the internal combustion engine (10). In the second operating mode, the bypass flow path (25) is closed and the expander (22) is connected to the internal combustion engine (10). The second operating mode (2) is selected if the pressure (p2) and/or the temperature (T2) of the operating medium downstream of the expander (22) exceeds a defined value.

JP6985038	Thermal energy recovery device
WO/2004/011777	RANKINE CYCLE SYSTEM
JPH04503235	[Title of the Invention] A PFBC power plant provided with a device which performs a method and such control which control a PFBC power plant

NEUNTEUFL KLEMENS (AT)
LACKNER OSWALD (AT)
GRADWOHL GERALD (AT)
BUCHER MICHAEL (DE)
COCOCCETTA FABIO (CH)
CALAON IVAN (IT)
GLENSVIG MICHAEL (AT)

PCT/AT2016/050246

January 19, 2017

July 11, 2016

Click for automatic bibliography generation  

AVL LIST GMBH (AT)
IVECO SPA (IT)
FPT IND SPA (IT)
MAHLE AMOVIS GMBH (DE)

F01K23/06; F01K23/14

US20090211253A1	2009-08-27
US20090071156A1	2009-03-19
US20140208754A1	2014-07-31
US20130318967A1	2013-12-05

BABELUK, Michael (AT)

View/Download PDF      PDF Help

Previous Patent: ELECTROCHEMICAL MODULE

Next Patent: METHOD FOR CONTROLLING A WASTE-HEAT UTILIZATION SYSTEM FOR A MOTOR VEHICLE