Distribution cam for internal combustion engine
A valve cam, internal combustion engine technology, applied in valve details, valve drive devices, etc., can solve the problems of limited cam performance, unfavorable profile optimization design, poor flexibility, etc. smooth effect
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[0058] The invention optimizes the profile design of the cam, improves the performance of the engine, and has the following characteristics:
[0059] 1. The present invention adopts ISAC (subsection acceleration function), these functions are the first-selected method when the cam profile is optimized, and can be applied to any form of valve train cam.
[0060] 2. ISAC can be freely matched with any function, with good flexibility, such as convenient control of positive acceleration width, etc.
[0061] 3. Available acceleration function types: sine function, polynomial, straight line or transition arc.
[0062] 4. The rising edge (or falling edge) is generally divided into 6 to 10 segment functions to determine how to match the general speed value, jerk characteristics, torque characteristics, and the complexity and workload of matching curves.
[0063] image 3 The profile line of the intake cam working section shown is composed of 12 functional curves, which are sequentia...
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