Coolant circuit for a self-propelled working machine comprising multiple electric drive components
AssigneeManitowoc Crane Group France SAS
InventorsAndreas Krug, John F. Benton
Life of this patent
Estimating the term…
Abstract
A coolant circuit for a self-propelled work machine includes multiple electric drive components, including a coolant pump for generating a flow of coolant which circulates in the coolant circuit, a heat exchanger for dissipating thermal energy stored in the coolant, and at least two circuit lines which extend parallel to each other and are embodied to guide the coolant past the drive components respectively assigned to them, in order to absorb thermal energy. A self-propelled work machine, in particular a mobile crane, includes multiple electric drive components and one or more such coolant circuits.
Claims6
A coolant circuit for a self-propelled work machine comprising multiple electric drive components, comprising:
- a coolant pump for generating a flow of coolant which circulates in the coolant circuit;
- a heat exchanger for dissipating thermal energy stored in the coolant;
- at least two circuit lines which extend parallel to each other and are embodied to guide the coolant past the drive components respectively assigned to them, in order to absorb thermal energy;
- at least one connecting line which fluidically connects at least two of the at least two circuit lines and which is adapted to draw part of the coolant from a first of the at least two circuit lines and feed said coolant to a second of the at least two circuit lines, wherein the at least one connecting line comprises at least one valve for opening and/or closing the connecting line and/or varying a volume flow of the coolant being guided through the connecting line;
- a sensor which detects a temperature of a drive component in the second of the at least two circuit lines;
- and
- a control device that activates the at least one valve to guide the volume flow of coolant via the connecting line when a detected temperature of the drive component in the second of the at least two circuit lines is below a predefined temperature threshold, such that heat discharged to the coolant by a drive component in the first of the at least two circuit lines is fed to the drive component in the second of the at least two circuit lines to increase the temperature of the drive component in the second of the at least two circuit lines.
A self-propelled work machine, comprising multiple electric drive components and a coolant circuit comprising:
- a coolant pump for generating a flow of coolant which circulates in the coolant circuit;
- a heat exchanger for dissipating thermal energy stored in the coolant;
- and
- at least two circuit lines which extend parallel to each other and are embodied to guide the coolant past the drive components respectively assigned to them, in order to absorb thermal energy;
- at least one connecting line which fluidically connects at least two of the at least two circuit lines and which is adapted to draw part of the coolant from a first of the at least two circuit lines and feed said coolant to a second of the at least two circuit lines, wherein the at least one connecting line comprises at least one valve for opening and/or closing the connecting line and/or varying a volume flow of the coolant being guided through the connecting line;
- a sensor which detects a temperature of a drive component in the second of the at least two circuit lines;
- and
- a control device that activates the at least one valve to guide the volume flow of coolant via the connecting line when a detected temperature of the drive component in the second of the at least two circuit lines is below a predefined temperature threshold, such that heat discharged to the coolant by a drive component in the first of the at least two circuit lines is fed to the drive component in the second of the at least two circuit lines to increase the temperature of the drive component in the second of the at least two circuit lines.
Dependencies are inferred from the claim text.