Patent ID: 11898487
Assignee: WEICHAI POWER CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 6:
7. The engine cooling method according to claim 6, wherein the controlling the upper water storage chamber of the cylinder head to be communicated with the upper water storage chamber of the engine body comprises:
acquiring a current second temperature value of the lower water storage chamber of the engine body;
if the current first temperature value of the lower water jacket of the cylinder head is larger than the first set temperature value, and the current first temperature value of the lower water jacket of the cylinder head is not larger than a third set temperature value which is larger than the first set temperature value and smaller than the second set temperature value, then calculating a first difference between the current second temperature value of the lower water storage chamber of the engine body and the current first temperature value of the lower water jacket of the cylinder head;
if the first difference is not smaller than a set target value, then controlling a flow rate between the lower water storage chamber of the engine body and the upper water storage chamber of the engine body to be reduced, so as to ensure that the current first temperature value of the lower water jacket of the cylinder head is larger than the first set temperature value and not larger than the third set temperature value; and
if the first difference is smaller than the set target value, then controlling the lower water storage chamber of the engine body to be disconnected from the upper water storage chamber of the engine body.