Chapter9 Gasoline ignition system Section 2 Traditional ignition system 2.Traditional Ignition System Working Principle switch: switch ignition circuit breaker distributor coil Figure 9.2 Traditional ignition system working process schematic diagram The working process of traditional ignition system is divided into three stages: contacts closure,the primary current growth;contacts open,the secondary coil produces high voltage;spark plug spark discharge between electrodes. 械电子工程学 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 9 Gasoline ignition system 2. Traditional Ignition System Working Principle The working process of traditional ignition system is divided into three stages: contacts closure, the primary current growth; contacts open, the secondary coil produces high voltage; spark plug spark discharge between electrodes. Section 2 Traditional ignition system
Chapter 9 Gasoline ignition system Section 3 Computer ignition control system 1.Characteristics and Types 1.1 Characteristics Conventional ignition system and electronic ignition there are still some less than satisfactory,especially for the control of the ignition time. The greatest success of computer control is to achieve the automatic control of the ignition advance angle.Namely,according to working conditions of the engine, the ignition advance angle can be timely controlled to obtain the best combustion mixture. In the computer ignition control system,ignition control,includes the ignition advance angle control,conduction time control and knock control.It has three characteristics: (1)In a variety of working conditions,it can obtain optimal ignition advance angle (2)In the range of all the work,the ignition coil on-time control makes the ignition coil stored energy that remains constant,which increases the reliability of ignition 机被寿电子工程原 Automobile and Tractor Northwest A&F University
Automobile and Tractor Northwest A&F University Chapter 9 Gasoline ignition system 1. Characteristics and Types 1.1 Characteristics Conventional ignition system and electronic ignition there are still some less than satisfactory, especially for the control of the ignition time. The greatest success of computer control is to achieve the automatic control of the ignition advance angle. Namely, according to working conditions of the engine, the ignition advance angle can be timely controlled to obtain the best combustion mixture. In the computer ignition control system, ignition control, includes the ignition advance angle control, conduction time control and knock control. It has three characteristics: (1)In a variety of working conditions, it can obtain optimal ignition advance angle； (2)In the range of all the work, the ignition coil on-time control makes the ignition coil stored energy that remains constant, which increases the reliability of ignition； Section 3 Computer ignition control system