Liquid-cooled internal combustion engine
First Claim
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1. A liquid-cooled internal combustion engine having a cylinder block and a cylinder head, each formed with an internal coolant cavity having an inlet port;
- a recirculating pump to which said cavities are connected;
a temperature-controlled regulating device for controlling the flow of coolant through said cavities, said regulating device having an inlet which is connected to an output of the recirculating pump, a first outlet which communicates with the inlet port of the cavity in the cylinder head, and a second outlet which communicates with the inlet port of the cavity in the cylinder block, and a valve body which, depending on the temperature of the cylinder block, adopts a first position and closes the second outlet when the temperature lies below a selected value, and adopts a second position and opens said second outlet when the temperature is above this value;
a low-pressure source;
a pressure capsule for activating said valve body; and
a temperature-controlled valve, said pressure capsule being connectable to said low-pressure source or alternatively to the atmosphere by said temperature-controlled valve.
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Abstract
A liquid cooled internal combustion engine having coolant cavities in the cylinder block and cylinder head, connected to a coolant circulating pump through a temperature controlled regulating device. The arrangement is such that below a selected temperature coolant circulates through the cylinder head only while above this temperature the coolant circulates through both the cylinder head and the cylinder block.
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Citations
10 Claims
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1. A liquid-cooled internal combustion engine having a cylinder block and a cylinder head, each formed with an internal coolant cavity having an inlet port;
- a recirculating pump to which said cavities are connected;
a temperature-controlled regulating device for controlling the flow of coolant through said cavities, said regulating device having an inlet which is connected to an output of the recirculating pump, a first outlet which communicates with the inlet port of the cavity in the cylinder head, and a second outlet which communicates with the inlet port of the cavity in the cylinder block, and a valve body which, depending on the temperature of the cylinder block, adopts a first position and closes the second outlet when the temperature lies below a selected value, and adopts a second position and opens said second outlet when the temperature is above this value;
a low-pressure source;
a pressure capsule for activating said valve body; and
a temperature-controlled valve, said pressure capsule being connectable to said low-pressure source or alternatively to the atmosphere by said temperature-controlled valve. - View Dependent Claims (2, 3)
- a recirculating pump to which said cavities are connected;
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4. A liquid-cooled internal combustion engine having a cylinder block and a cylinder head, each formed with an internal coolant cavity having an inlet port;
a recirculating pump to which said cavities are connected; and
a temperature-controlled regulating device for controlling the flow of coolant through the said cavities, said regulating device having an inlet which is connected to an output of the recirculating pump, a first outlet which communicates with the inlet port of the cavity in the cylinder head, a second output which communicates with the inlet port of the cavity in the cylinder block, and a valve body which, depending upon the temperature of the cylinder block, adopts a first position and closes the second outlet when the temperature lies below a selected value, and adopts a second position and opens the second outlet when the temperature is above this value.- View Dependent Claims (5, 6, 7, 8, 9, 10)
Specification