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Optimal dwell angle ignition circuit and optimal control method of gasoline engine

An ignition circuit, gasoline engine technology, applied in the direction of electrical automatic control, automatic control, automatic control, etc., can solve the problems of increased emissions, insufficient combustion, poor dwell angle control, etc.

Inactive Publication Date: 2013-04-10
曹杨庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Poor control of dwell angle can lead to incomplete combustion or increased emissions

Method used

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  • Optimal dwell angle ignition circuit and optimal control method of gasoline engine
  • Optimal dwell angle ignition circuit and optimal control method of gasoline engine
  • Optimal dwell angle ignition circuit and optimal control method of gasoline engine

Examples

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Effect test

example 1

[0063] Example 1: Motorcycle constant voltage ignition circuit. Circuit composition see figure 2 , including control circuit, high voltage package, drive circuit, switch circuit, detection circuit and other functional circuits. The magnetic pulse signal is transformed into a TTL level ignition signal through the pulse shaping circuit, and connected to the interrupt input terminal P3.3 (INT1) of the microcontroller circuit AT89C52 as the control circuit. The single chip microcomputer receives the ignition signal in an interrupt mode. An output terminal P1.0 of the control circuit is connected to the input terminal of the driving circuit, and the output terminal of the driving circuit is connected to the control terminal or b of the switching element T2 of the switching circuit. The switching element is a high-power transistor, and a Darlington tube can also be selected. The current-limiting resistor in the high-voltage package B1, the primary low-voltage and secondary high-v...

example 2

[0072] Example 2: An example of an optimal dwell angle ignition circuit for a motorcycle under constant voltage and working conditions. The circuit composition is shown in Figure 3. First introduce the constant pressure control. The control circuit can be a general-purpose single-chip microcomputer, which at least has a digital output port OUT1, an A / D conversion input terminal AD0, an interrupt or digital input terminal INT1 and INT2, an analog comparator input terminal CMP-, and an internal analog comparator with programmable comparison benchmark. In this example, PIC12F615 is selected, and the ports are configured according to the functions described above. The connection is shown in the figure. The ignition signal is the motorcycle electromagnetic ignition trigger signal, which is shaped by the pulse shaping circuit to generate one or two TTL level signals, which are accepted by the control circuit in the form of interruption. GP2 (INT1) is connected to a trigger signal...

example 3

[0087] Example 3: An example of the optimal dwell angle multi-cylinder ignition circuit under the working condition of a gasoline engine. The circuit composition is shown in Figure 4. The control circuit has at least a digital output port OUT1 and an A / D conversion input port AD1, and the conversion time should be less than 100 microseconds. Interrupt input terminals INT1 and INT2, analog comparator input terminal CMP-, the internal analog comparator has a programmable comparison reference. In this example, Freescale MC9S08JM60 / 32 is selected, and the port lines are configured according to the functions described above, and the connections are as shown in the figure. Its KBIP7 and KBIP6 are respectively connected to the shaft reference position signal and the rotation angle (speed) signal, ACMP- is connected to the output of the detection circuit, PTB7 is connected to the drive circuit, and ADP2 is connected to the auxiliary detection circuit. When other single-chip microco...

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Abstract

The ignition dwell angle cannot be accurately controlled yet in the prior art; and in order to guarantee ignition energy, the dwell angle is set to be larger, so that the efficiency and the equipment reliability are reduced. The energy consumption caused thereby also has a strong impact on application of inductive ignition to a motorcycle. The scheme provided by the invention comprises a control circuit, a high pressure pack, a driving circuit, a switching circuit and a detection circuit, wherein the detection circuit is used for detecting a primary current up-to-standard moment and comparing with an ignition moment to obtain dwell angle deviation and correct the dwell angle so as to keep the ignition voltage at the optimal design value constantly. A detection working condition parameter is increased and a mathematical model is referred, so that the ignition energy period and working condition requirement are accurately and quantitatively matched, collectively referring to as an optimal dwell angle ignition circuit and an optimal control method of a gasoline engine. The problem that the ignition energy is configured according to a constant value or a working condition by the gasoline engine is completely solved. The ignition energy consumption is further reduced by using development of an ignition technology and matching with a new technology of the engine. A battery and a magnetic motor cannot be increased by upgrading CDI (Capacitor Discharge Ignition) of a motorcycle to inductive ignition.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine ignition, and in particular relates to a direct current inductance ignition circuit for a gasoline engine. Background technique [0002] The igniter plays an important role in controlling the gasoline engine. In pursuit of the power, efficiency and emission performance of the gasoline engine, the traditional AC igniter of motorcycles has been increasingly replaced by the DC inductive igniter. Inductive ignition has always been the main ignition method for automobiles. Inductors, also known as high voltage packs, contain primary and secondary coils. [0003] A variety of inductive DC igniters composed of traditional electronic circuits or combined with single-chip microcomputers have appeared. The primary coil of an inductor needs to be powered by a current. As an energy storage process, the primary coil needs to be energized for a period of time to reach a certain primary cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P5/145
Inventor 曹杨庆
Owner 曹杨庆
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