РАботна температура N54 битурбо e90

[salamaleikum Профил]

Колеги каква е нормалната работна температура на N54 мотора, защото колата работи на място при загрял мотор, между 105 и 115градуса. Перката включва на 114 градуса? И в импа и на таблото от скритото меню показва толкова? Какви са възможните проблеми? моля за съвети

[DigitalExile Профил]

http://mywikimotors.com/n54b30/

Normal engine operating temperature, °C (F) ~115 (240)

Какви са възможните проблеми?

Common problems

1. The most common problem of N54 engine is connected with high pressure fuel pump (HPFP). It will serve you not more than ~50 000 km (30 000 miles) of mileage in case you use fuel of low quality. The main symptoms of HPFP problems include reduced power; the price of new HPFP is not very high.
2. Sometimes problems of white smoke may also occur. This is when you need to check the coolant level which is the main cause of such problem in the majority of cases.
After 100,000 km (60,000 miles) of mileage high pressure fuel injectors often go out of order in N54 engines. The same duration term is for water pump and turbocharger. Spark plugs will serve for about 20,000 km (12,000 miles) of mileage.
Abovementioned figures also depend on level and type of usage.
Summing up we can say that this engine is rather reliable and powerful. Owners will hardly face any problems. At the same time this motor has high level of durability and long lifespan. In addition it is the best bet for those who like different tuning experiments. This is why BMW N54 is one of the best engines ever produced by major bavarian automaker.

[salamaleikum Профил]

Не е ли относително висока?

[DigitalExile Профил]

Ми за този мотор е нормално малко повече инфо има в тази тема въпреки, че там пише за N52 мотори положението тук е подобно. Прави се заради икономия на гориво и вредни емисии.
viewtopic.php?p=3025012#p3025012

The heat management now permits various characteristic maps to be used as a basis for controlling the coolant pump, over and above the map thermostat. In this way, the engine control unit can adapt the engine temperature to the driving characteristics.
The engine control unit regulates the following temperature ranges:
· 112 ° C = Economy
· 105 ° C = Normal
· 95 ° C = High
· 80 C = High and regulation by the map thermostat
If the vehicle handling causes the engine control unit to detect the economical operating range Economy, the DME regulates to a higher temperature (112 C). ne In this temperature range, the engine is operated with a relatively fuel requirement. The friction inside the engine is reduced at higher temperature. The temperature increase thus favours lower fuel consumption in the low load range.
In the High and regulation by the map thermostat mode, the driver wants to use optimised power output development of the engine. To achieve this, the temperature in the cylinder head is lowered to 80 ° C. This lowering leads to a better cylinder filling, which leads in turn to an increase in engine torque. The engine control unit can now regulate a certain operating range, adapted to the relevant driving situation. This makes it possible to use the cooling system to influence consumption and performance.