A method for controlling the temperature of a cooling fluid in a cooling system and a cooling system
Inactive Publication Date: 2019-07-04
SCANIA CV AB
View PDF0 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The technical effect of this patent is to develop a method for controlling the temperature of a cooling fluid in a cooling system for vehicles that optimizes engine efficiency and reduces fuel consumption. This method should be robust and able to quickly actuate valves in the system to quickly optimize the cooling fluid temperature.
Problems solved by technology
This is specifically an issue for manufacturers of heavy vehicles, such as trucks and buses.
If the cooling liquid temperature becomes too high there is a risk that the condenser or other components of the cooling system will be damaged.
However, sufficiently accurate and on the other hand flexible control of the cooling system cannot be obtained by means of thermostats.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035]FIG. 1 schematically shows a side view of a vehicle 1 comprising an internal combustion engine 2, a waste heat recovery system 4 associated with the internal combustion engine 2 and a cooling system 6 connected to the waste heat recovery system 4. The vehicle 1 further comprises a gearbox 8 connected to the driving wheels 10 of the vehicle 1. The vehicle 1 may be a heavy vehicle, e.g. a truck or a bus. The vehicle 1 may alternatively be a passenger car. The vehicle may be a hybrid vehicle comprising an electric machine (not shown) in addition to the combustion engine 2.
[0036]Reference is now made to FIGS. 2 and 3 which schematically illustrate example embodiments of a cooling system of the present invention connected to a waste heat recovery system via a condenser. Each one of FIGS. 2 and 3 schematically shows the waste heat recovery and the cooling systems 4, 6 arranged in fluid connection with an internal combustion engine 2 of a vehicle 1.
[0037]Generally, the cooling system...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Provided is a method for controlling the temperature of a cooling fluid in a cooling system comprising a cooling circuit connected to a condenser of a waste heat recovery system, a cooling pump arranged to circulate a cooling fluid through the cooling circuit and a radiator arranged for cooling the cooling fluid, a bypass circuit, a first and a second valve unit, wherein the first valve unit is arranged to control the flow of cooling fluid through the radiator and the bypass circuit, and the second valve unit controls the flow of cooling fluid passing through the condenser. A condenser-in temperature of the cooling fluid is determined by a first temperature sensor and an engine-in temperature of the cooling fluid is determined by a second temperature sensor. The flow of the cooling fluid is controlled by the first valve unit and / or the second valve unit based on the determined condenser-in and engine-in fluid temperatures.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a national stage application (filed under 35 § U.S.C. 371) of PCT / SE2017 / 050837, filed Aug. 22, 2017 of the same title, which, in turn, claims priority to Swedish Application No. 1651213-9, both filed Sep. 9, 2016 of the same title; the contents of each of which are hereby incorporated by reference.FIELD OF THE INVENTION[0002]The present invention relates to a method for controlling the temperature of a cooling fluid in a cooling system coupled with an internal combustion engine of a vehicle, a cooling system, a vehicle comprising such a cooling system, a computer program and a computer program product according to the appended claims.BACKGROUND OF THE INVENTION[0003]Vehicle manufacturers are today striving to increase engine efficiency and reduce fuel consumption. This is specifically an issue for manufacturers of heavy vehicles, such as trucks and buses. One way of improving engine efficiency and fuel consumption is ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F28D21/00F28F27/02
CPCF28D21/0003F28F27/02F28D2021/0094F28F2250/06F01N5/02F01P3/12F01P3/20F01P7/14F02G5/02F16T1/00Y02T10/12F01K9/003F01K23/06F02G5/04F01P2007/146F01K23/065F01P2025/30F01P2060/14F01K9/00
Inventor JOHANSSON, BJORNHOCKERDAL, ERIK
Owner SCANIA CV AB