"VTEC" is the abbreviate of English "Variable Valve Timing And Lift Electronic Control System" , chinese meaning is " alterable valve when reach electron rising Cheng to control systematic " .
Average car engine group of every crocks of valve by drive of a group of cam, and the engine of VTEC system has however in the spiracle drive cam that low speed is used and high speed differs with two groups, what can control a system through the electron is automatic operate, have automatic transition.
Use VTEC system, the photograph distributing gas with the low speed in assuring engine and different high speed reach the demand that presents tolerance, make no matter engine leads movement to achieve power in He Su gender, economy and low discharged unity and admirable condition.
The VTEC engine technology of this cropland will introduce in detail to everybody below
The concentration that the function of engine often is each respect function is behaved. The design of good engine should be OK when low speed give out driving torque, mighty power can be issued when high speed. The design of certain part will affect engine the state that engine works, for instance the amount of compression ratio, valve, manifold that take energy of life adjusts the bulk of orgnaization and vent-pipe and length to wait, but these designs that do not have camshaft are big to the influence of engine function.
Camshaft, in the share that there are a lot of egg shape circles to highlight above it, its action is in namely proper when open and the valve that close engine air cylinder. Camshaft is not a very extraordinary thing it seems that, but it can say however the heart that going up is engine, to camshaft outside profile shape and its are initiative even if the position of corner is little change, another kind of state that can make the movement of engine will appear to differ completely.
Before the design that decides camshaft, the engineer is indispensible know what kind of car uses what kind of motor. Very apparent, the engine that designs for drawing engine needs to be able to give out big torque when low speed, the engine that designs for motile racing bike needs to be in high speed from time to tome bigger power output. Gearshift comparing, gearing and car are us again in the choice a camshaft place needs the element of the consideration. Incorrect use camshaft, can make car function becomes poor not only, quicken faint, the action is sluggish, and still very bad news is oily, anybody drives the thing that this kind of car will be an anguish, design and use camshaft correctly, driving can be a happy thing to us.
Imagine very hard, one looks be like the camshaft with simple structure to be able to let engine give out big torque when low speed, engine can let issue high power when high speed. Also some of manufacturer uses alterable cam to time the orgnaization will make engine achieves this kind of performance. To bigger torsion can get in outdated of low rotate speed, right now cam corner photograph can have a point of view that shifts to an earlier date relatively to crankshaft, such valve can compare normal circumstance to fall to be shut for some time ahead of schedule, increase the pressure of air cylinder, achieve the goal that raises torsion thereby. And when high speed, camshaft can have delay of a time at crankshaft relatively, spiracle compares normal circumstance defer to be shut for some time, can increase the efficiency of engine, achieve the goal that increases power thereby. Alterable cam opportunity compose can solve this problem, but this cropland had spanned this one pace, found a better way.
Previous12 Next
