Sam się zastanawiam jak to wszystko działa. Z ciekawostek wyczytałem tutaj http://www.motor-talk.de/forum/aktion/A ... tId=681704
że w tym silniku pompa wody jakby "wyłącza się" podczas gdy silnik jest zimny. Cytuję
"Intelligent thermal management with an on-demand water pump.
On-demand management of the coolant volume delivered is one of the
numerous measures taken to reduce fuel consumption. A friction gear
mounted on a bearing arm is positioned between the water pump gear and
the pulley on the crankshaft. An electrically operated eccentric gear serves to
change the position of the gear wheel, and the water pump may be switched
off when starting the engine cold in order to warm up the engine more quickly.
To save drive power and expedite the warming-up process, coolant is not
circulated until the engine has reached its normal operating temperature.
Then, when it has reached the appropriate temperature, the engine is held
steady at that point by a thermostat masterminded by the engine’s
electronic “brain”, ensuring the most fuel-efficient coolant temperature at
each respective operating point."
No i teraz pytanie jak naprawdę ta pompa się zatrzymuje i jaki to ma wpływ na temperaturę reduktora?
Żeby było jeszcze ciekawiej pompa oleju też jest "zmienna"
Fully controlled oil pump.
On-demand oil supply delivers only as much oil as is actually required.
Depending on operating conditions, the volume flow-controlled oil pump
requires up to 1.25 kW less drive energy and reduces fuel consumption
by up to 1 per cent.
On-demand oil supply without any loss of oil.
Equipped with a volume flow-controlled oil pump, the new power units rank
unique in their class also in terms of their oil supply.
Operating as a function of oil pressure, the external gear pump driven by a
chain delivers precisely the amount of oil required under all operating
conditions. In other words, there is no need for a bypass feeding back excess
oil or extra volume not needed. Benefitting from this optimised on-demand
management without any unnecessary energy or forces, the volume flowcontrolled oil pump consumes up to 160 W less drive energy than a
conventional pump, reducing fuel consumption in the European driving cycle
by approximately 1 per cent. And under normal driving conditions with the
car in the hands of a customer, the reduction in fuel consumption is far greater,
with a power saving of 1.25 kW or 1.7 bhp at 6,000 rpm.