Combined cam
A technology of combining cams and cams, applied in valve details, valve drive devices, etc., can solve problems such as the inability to reduce the piston clearance volume compression ratio, the collision between the valve and the piston, and the failure of the diesel engine to work normally.
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[0031] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0032] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0033] A combination cam of the present invention, such as figure 1 As shown, the cam profile of the combined cam is composed of a multi-section function cam profile, which adopts a multi-section combined function design, and sequentially includes a rising buffer section 1, a first rising working section 2, a second rising working section 3, and a third Ascent working section 4, flat section 5, first descending working section 6, second descending working section 7 and descending buffer section, wherein the descending buffer section is composed of constant velocity section 8 and constant acceleration section 9;
[0034] In the following formulas 1 to 9, h(α) and h(X) are cam lifts, and ...
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