Back to results
US 6,786,183 B2Granted
Coolant circuit for an internal combustion engine and method of making and using same
AssigneeDaimlerChrysler AG
InventorsMichael Hoelle, Roland Kemmler, Erhard Rau, Hubert Schnuepke
Life of this patent
Estimating the term…
Abstract
A coolant circuit is provided for an internal combustion engine, with a coolant radiator, at least one mechanical coolant pump and at least one electrical coolant pump for a cooling circuit having a coolant inflow and for a heating circuit having a coolant return, in each case with at least one heat exchanger, the mechanical coolant pump and/or the electrical coolant pump being assigned to the heating and/or cooling circuit, and the mechanical pump being capable of being cut in and cut out or of being throttled.
Claims25
Coolant circuit for an internal combustion engine, comprising:
- a radiator, and a cooling circuit having a coolant inflow and a heat exchanger, and
- a heating circuit having a coolant return and a heating heat exchanger,
- wherein the cooling and heating circuits together include at least one mechanically driven coolant pump and at least one electrically driven coolant pump,
- wherein the mechanical pump can be cut in, cut out, or throttled, and
- wherein the internal combustion engine has at least one coolant inflow throughflow-connected to the mechanical coolant pump and to the electrical coolant pump and at least one coolant outflow throughflow-connected to a throttle, the heating heat exchanger of the heating circuit, and the heat exchanger of the cooling circuit.
2 more elements
Dependencies are inferred from the claim text.