Ford Focus>> System of greasing of the engine>> Oil circulation under pressure
Oil moves to greasing places under pressure. However too high pressure, for example at cold or dense oil, can become the reason of damage of the engine at long influence. It is counteracted by the reduktsionny valve (on a bypass way), located on a flange of the case of the oil filter. It opens at pressure of 400 kPas and returns oil in soaking-up cavity of the oil pump. At the serviceable oil pump engine oil moves to greasing places at pressure of 1500 — 2500 kPas, temperature 80 — 100 ° With (data for universal SAE 10W-30 oil). On single turns pressure makes 60 — 100 kPas.