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Wheel change
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Video Mineral Oil 1
Video Mineral Oil 2
Video Mineral Oil 3
Video Mineral Oil 4
Video Mineral Oil 5
Video Mineral Oil 6
Video Mineral Oil 7
Video Mineral Oil 8
Video Mineral Oil 9
Video Mineral Oil 10

Video Fuel
Video Characteristics of fuels
Video Fuel Filter
Video Fuel Tank
Video Fuel vapours
Video Petrol 1
Video Petrol 2
Video Knock Resistance
Video Ethanol 1
Video Ethanol 2
Video Hydrocarbon
Video Diesel Fuel 1
Video Diesel Fuel 2
Video Wrong fuel
Video Cetan number
Video Sun Fuel
Video Biologic Diesel Fuel
Video Vegetable Oil Fuel
Video Fuel Cooling
Video Fuel Preheating
Video Sel. Catal. Reduction
Video Liquef. Petroleum Gas
Video LPG conversion 1
Video LPG conversion 2
Video Opel Corsa LPG 2007
Video Natural Gas
Video Natural Gas Running
Video Air
Video Methanol Operation
Video Nitrous Oxide

Video Fuel 1
Video Fuel 2

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Fuel Preheating by
    Reverse Running


It does not need large expenditures, just a heat valve and a disrupted fuel return pipe, to prevent fuel in the filter from paraffin expulsion and therewith from blocking at low temperatures. Indeed, the temperatures should not sink with this system so far that already the fuel which is in the filter at the moment of starting the engine becomes too thick.

How it works

Diesel oil can become as hot as 80C in the fuel injection pump. Because it heats up faster than the coolant, you can use the heat of the diesel oil flowing back to the tank to heat the fuel sucked in. At temperatures below 15C the red bimetallic leaf operates the check valve and opens the filter for the slightly heated runback fuel. Above this temperature the fuel flows back to the tank for cooling. The intake of stronger heated fuel is undesirable for the diesel engine. Therefore, modern engines cool the runback fuel, in addition, before it enters the tank.               Top of page               Index
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Translator: Don Leslie - Email:

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