The P-point A tube ignition flywheel is also called a transistor ignition system because it uses a triode as a switching element.
It is the working principle diagram of the induction discharge battery ignition system. When the ignition switch K is closed, the triode VTV is in an on state, and current flows from the battery to the ignition coil primary winding L1. When the engine is started, the pulse coil L3 generates an alternating current signal, and when the P point is in the + direction, the triode VTY remains in an on state; When the point is - direction, the triode VIV is turned off, so that the current of the primary winding L1 is cut off, the magnetic flux of the ignition coil is rapidly changed, and high voltage is generated in the secondary winding L2, causing the spark plug to generate a spark.
Haojue GN12S motorcycle adopts the induction discharge type battery ignition system. This system has the characteristics of ignition energy, long ignition time and high reliability. It can automatically control the ignition time, and the ignition energy does not change with the change of engine speed. It is an advanced ignition device that does not require adjustment and maintenance.
In order to prevent the loosening of the fixed mechanism and the loosening of the mother, there are various ways to prevent the shackle and the mother from loosening, such as ordinary spring washers, disc spring washers, claw washers, self-locking mothers, and double jaws. Mother, trough trap, caulking lock, female, lock pin and split pin, as well as gap glue * bolt and grain anti-loose. In addition to the bolts and nuts, these methods require a third device to prevent loosening. The plastic deformation torsion bolt is not.
The plastic deformation torsion torque bolt is to tighten the bolt according to the specified initial torque, and then twist the bolt to a predetermined angle with respect to the connecting member, so that the bolt has a predetermined elastic deformation, so that the bolt has a certain prestress. , to play the purpose of self-locking and anti-loose.
When installing the elastic deformation torque bolt, firstly twist the * bolt in the symmetrical direction, and then tighten it again with the specified torque, and then twist the bolt to the specified number of turns with respect to the tightened position. For example, the engine connecting rod bolt of the Jetta sedan has a tightening order of 30N*m+ 1/4 turn; the engine connecting rod of the Tana sedan has a tightening order of 30N*m+1/2 turn.
Plastic deformation torsion * The plug produces partial residual tensile deformation after torsion. When it has been used several times, its diameter is less than the specified size or the length of the bolt exceeds the specified size, it should be replaced. Usually, the plastic deformation torsion pin can be reused once, and a mark must be placed on the prying head when it is used repeatedly. In the maintenance work, the marked plastic deformation torsion* bolts must be replaced once disassembled, and no other bolts should be used at will. For the use of plastic deformation torsion * bolts, the repair information of each car is noted, in use, must pay attention to check the limit of the use of such bolts or the use of the second defeat, silk can not be sloppy, otherwise, will Causes serious mechanical failure.
â–¡ Qi Si in the process of repairing the internal combustion engine, the degree of cylinder wear, China's motorcycle repair industry is accustomed to use the ellipticity (out of roundness) and non-column (cone degree) two indicators to balance children. However, in recent years, there are few, or even no, roundness or non-column terms in the technical information on engine maintenance. The reason is that in the current "automobile repair technical standards", the ellipticity and the non-column degree are eliminated, and the roundness error and the cylindricity error are used instead.
The roundness error is the same as the ellipticity, cylindricity error and non-column measurement method. Both are measured by the two-point method using the cylinder table; but the counting method is different: the roundness error and the cylindricity error are the cylinders. The table indicator reads half of the maximum difference, which is one-half of the oval and non-column values ​​in the original technical standard.
For example, an engine cylinder is measured by the ft cylinder table. The diameter near the cylinder shoulder is 78.12mm perpendicular to the crankshaft axis, the diameter parallel to the crankshaft axis is 78.04mm, and the lower piston of the cylinder is at the bottom dead center. The diameter of the piston ring outside the moving area is 78.01. The ellipticity of the cylinder is 0.08mm, the non-column is 0.11mm; the roundness error value is 0.04mm, and the cylindricity error is 0.055mm. In the actual maintenance process In the middle, we must pay attention to distinguish the roundness error from the roundness, the cylindricity error and the non-column degree, and pay attention to the unequal relationship between the roundness error value and the ellipticity value, the cylindricity error value and the non-column value. It is forbidden to equate roundness error with ellipticity, cylindricity error and non-column and its value...1
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