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Cut down
Page 72
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the fuel bill continued sections. Keeping at 50 would cut dow this useful practice with the result that driver would not be able to optimize h overall cruising speed.
Driver co-operation
As the driver is the man closest to tt vehicle many aspects of fuel econorn are in his hands. Apart from easing bac on cruising speeds, a light throttle recommended at all times wit absolutely no fierce acceleratio; Changing up before peak revs is a goo thing with the extra benefit of keepin the power unit operating at the rigl point of the torque curve as workin hard at the lower end of the range sui the characteristics of the diesel engin4 Maintaining engines and chassis t the recommended standards an schedules should be part and parcel any well run organization, but mar minor problems can only be rectified they are brought to the workshop notice in the first place. The moral he; is to encourage the driver to look out ft little things such as fuel leaks, howev, slight, and to check on tyre pressure:
Working temperature
Keeping the engine at its optimu working temperature should figure ne; the top of every checklist. Diesel engin, spend most of their life being ove cooled especially on the motorway wht the sheer force of the airflow throul the radiator due to the forward motit of the vehicle is more than adequate f cooling purposes. However, some for of extra cooling is necessary for lo; hauls up the steeper gradients and whi in heavy traffic — hence the fan. A; device which artificially maintains ; even working temperature is to recommended, and many such devie are on the market in the form of therm statically controlled fans and radiat shutters.
Coming back to the Volvo test I di cussed earlier, this particular test vehic was fitted with a thermostatically co trolled fan which never once came in operation even on long climbs at 38 to gross: If this engine had been fitted wi a conventional fan a lot of fuel wou have been wasted. It is interesting note that the new Ford "H" series to I released later in the year will probab be fitted with both thermostatically co trolled fan and radiator shutters.
In terms of total fuel saving the easic avenue is by using 38 tons, but this is st in the lap of the gods at present. The main cause of high fuel cc sumption is high speed and if drivt could be persuaded to co-operate the.' substantial saving would result.