Quote:
Originally Posted by cheshired5
I have.
I suggest you read it again.  |
Are your highlighting those words to play nitpic on how the tabs are named exactly ?
I have to startup a different pc to see it exactly so i broadly reffered it
The information i was referring to is there and not hard to find
And if you had found it and want to do difficult on the naming than im very dissapointed in you.
The ****ty system system i have to run it on doesnt allow me to printscreen it
So i paste some relevant text
You can find it under information/ product specifications/design and functions/coolingsystem
Quote:
The shut off valve is located in the inlet pipe from the thermostat housing to the expansion tank. This limits the coolant flow to the expansion tank when the engine is being run to operating speed.
The bypass valve is located between the coolant outlet on the cylinder head and the feed line to the coolant pump. This restricts the coolant flow to the coolant pump when the engine is run hot.
Most of the coolant is fed to the heat exchanger and flows back to the coolant pump via the EGR cooler.
The bypass valve begins to open at a certain coolant temperature. It remains open until the engine has reached operating temperature.
Once the engine has reached operating temperature, the thermostat and shutoff valve are fully open and the bypass valve is fully closed. At this point, the large coolant circuit is open.
The time required to warm up the engine is reduced and the cab temperature can be increased more quickly by using the shutoff valve and bypass valve.
The bypass valve and shutoff valve are controlled by the engine control module (ECM).
Coolant circuit
The flow of coolant is dependent on the following components:
Bypass valve
thermostat
shutoff valve
engine temperature sensor
engine control module (ECM)
Due to the high efficiency of the diesel engine and thus relatively small heat losses, there may be problems with maintaining a comfortable temperature in the cab when the outdoor temperature is low. The job of the various components is, on the basis of the coolant temperature, to control the flow of coolant to the heater element in the cab so that the coolant heats up as quickly as possible.
Warm-up phase, thermostat closed
The thermostat and solenoid valve are closed while the engine is warming up. At the same time, the bypass valve keeps the link from the cylinder head to the coolant pump closed.
The coolant circulates in the small circuit only, from the cylinder head and from the oil cooler to the heat exchanger in the cab.
When the engine coolant temperature rises, the bypass valve opens the connection to the coolant pump in proportion to the temperature increase. The coolant now flows to the heat exchanger in the passenger compartment and the inlet for the coolant pump. The thermostat and solenoid valve are still closed.
Thermostat starts to open
When the thermostat starts to open, the bypass valve closes the link between the cylinder head and coolant pump proportionally.
At the same time the solenoid valve gradually opens the link to the expansion tank. The flow from the cylinder head is now divided to:
the cab's heat exchanger
the inlet for the coolant pump
radiator
expansion tank
Engine has reached correct operating temperature
Once the engine has reached the correct operating temperature, the bypass valve completely closes the link between the cylinder head and the coolant pump. At the same time the solenoid valve completely opens the link to the expansion vessel.
A small amount of the coolant now flows through the cab's heat exchanger while the large flow takes place via the radiator.
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Thats what VIDA said
But i also tried to find it myself and havent be able to pinpoint the location(s) yet
Im also planning to temp sensor the metal pipe to the heatercore to capture the effect