Gasket, engine and automobile

摘要

Disclosed is a gasket (105, 2100, 3100, 4100), wherein the gasket (105, 2100, 3100, 4100) is a circular ring-shaped integral (101), at least one face of which is a plane provided with an oil groove (104, 2130, 3130, 4130), and a centre line of the oil groove (104, 2130, 3130, 4130) is a curve (103) or a straight line (102). When the centre line of the oil groove (104) is a straight line (102), the included angle between the centre line of the oil groove (104, 2130, 3130, 4130) and a radial line from the centre of the circular ring of the gasket (105, 2100, 3100, 4100) is greater than zero. Further disclosed are an engine and an automobile employing the above-mentioned gasket (105, 2100, 3100, 4100). The gasket (105, 2100, 3100, 4100) has good lubrication and reduces the frequency of maintenance.