关键词: 倾斜试验；三缸汽油发动机；机油含气量；主油道机油压力；曲轴箱通风系统机油耗

Abstract: The purpose of engine tilt test is to verify whether the state of lubrication system and crankcase ventilation system in front and rear tilt, left and right tilt and the combination of them meet the requirements, and analyze these cases separately and synthetically. Taking a three cylinder gasoline engine as an example, this paper introduces the test purpose, test preparation, instrument and equipment, test method, data result analysis, etc. By tilting the engine to a certain angle to simulate the oil level and angle of the oil pan when the vehicle is accelerating, turning and braking, the test evaluates whether the engine lubrication system and crankcase ventilation system can meet the normal working requirements of the engine under similar vehicle conditions, so as to provide reference for the design and verification of the engine.

Key words: Tilt test; Three cylinder gasoline engine; Oil aeration; Oil pressure; Ventilation system oil consumption