点火系实验（Ignition system experiment）.doc

点火系实验（Ignition system experiment） Experiment three ignition system experiment First, the purpose of the experiment 1. consolidate the fundamentals of traditional ignition systems and various electronic ignition systems taught in the classroom. 2. master the use of experimental instruments and equipment. 3. study the mechanism of the traditional ignition system and the factors that affect the ignition energy and ignition advance angle. 4. study the ignition requirements of the engine, compare the advantages of the traditional ignition system with the electronic ignition system. 5. learn to use system principles and acquired technical parameters to improve the ability to analyze and solve problems. Two, the main content of the experiment 1. contact the traditional ignition system experiment Experiment of 2. magnetoelectric induction electronic ignition system 3. Holzer type electronic ignition system experiment 4. photoelectric electronic ignition system experiment 5. distributor direct ignition system experiment Three 、 experimental equipment and tools 1. DHS - 6B automobile ignition system comprehensive experimental table; 2. timing lamp, multimeter, a set of common tools. Four 、 experimental principle (1) the principle of contact type conventional ignition system: In the experiment, the generator cam rotates under the cam shaft drive, thus alternately breaking the electric appliance, closing the electric shock and opening it. When the circuit is switched on when the instrument panel circuit shown in the figure, the primary circuit is switched on, then the current through the primary winding, the flow of current to the battery positive: table, ignition switch, ignition coil, + switch stud, additional resistance to ignition coil switch terminal to the primary winding of the ignition coil, ignition - the terminal point to ground fault, electric shock, negative battery. The current increases gradually and a strong magnetic field is formed in the iron core of the coil.