Unlock instant, AI-driven research and patent intelligence for your innovation.

Small-sized engine electric-controlled system

An electronic control system and engine technology, which is applied in engine control, machine/engine, electrical control, etc., can solve the problems that the whole vehicle cannot be driven, is complicated, and the amount of vehicle changes is large, so as to reduce pollution and improve economy.

Inactive Publication Date: 2009-03-25
ZHANJIANG DENI VEHICLE PARTS
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electronically controlled fuel injection system is larger and more complicated than the carburetor system, and the vehicle has a large amount of modification. It requires more design and manufacturing costs in the early stage, and more manpower and material resources in the training of after-sales service personnel and equipment purchase in the later stage. As a result, the price of the whole vehicle is expensive, so it is difficult to popularize in the field of motorcycles that require high cost control
[0005] In addition, although the electronically controlled fuel injection system has the function of "limp home", it can only deal with the failure of the sensor; if the actuator fails, or even the ECU fails, the whole vehicle will not be able to drive
When the battery is dead, the system cannot work and the motorcycle cannot be ridden

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Small-sized engine electric-controlled system
  • Small-sized engine electric-controlled system
  • Small-sized engine electric-controlled system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the small engine electric control system of the present invention includes an electronic control unit ECU10, and a sensor and an actuator electrically connected to the electronic control unit ECU10; wherein the sensor includes a temperature sensor 8 installed on the engine cylinder head or cylinder block , the trigger coil 12 of the engine itself, the oxygen sensor 9 installed on the engine cylinder exhaust port or the muffler; the actuator includes a solenoid valve 1 installed on the carburetor 3, connected between the carbon tank 4 and the carburetor 3 The carbon canister solenoid valve 5 in between, the system status indicator light 11 installed on the instrument panel.

[0027] Before and after the motorcycle is started, the user can know whether the system is normal through the system status indicator light 11. Turn on the key, before the ignition is off, if the system status indicator 11 is not on, it means that there is a fault in the ...

Embodiment 2

[0031] This embodiment is basically the same as the first embodiment above, the main difference is that: figure 2 As shown, another solenoid valve 2 is also installed on the main air passage of the carburetor 3, and the solenoid valve 2 is an on-off solenoid valve like the solenoid valve 1, and the electronic control unit ECU10 applies a duty ratio signal to it, through Adjust the size of the duty cycle, that is, adjust the proportion of the power-on time in each on-off cycle to achieve the effect of adjusting the opening of the solenoid valve, thereby adjusting the air supply volume of the main airway.

[0032] Because if you want to implement more precise control on medium and high speeds, or apply this system on an engine with a slightly larger displacement, after adding another solenoid valve 2, you can increase the air supply volume. The working principle of the solenoid valve 2 is the same as that of the solenoid valve 1. The electronic control unit ECU10 adjusts the op...

Embodiment 3

[0034] This embodiment is basically the same as the first embodiment above, the difference is: image 3 As shown, in order to control the air-fuel ratio more accurately, a negative pressure sensor 7 for sensing the intake negative pressure of the engine is installed on the intake flange or carburetor of the engine. Working conditions, implement precise air-fuel ratio control for each working condition point.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of engine, and in particular discloses an electronically-controlled system of a small-sized engine, which comprises an electronically-controlled unit ECU, a sensor and an actuator which are in electrical connection with the electronically-controlled unit ECU, wherein the sensor comprises a temperature sensor arranged on a cylinder cover or a cylinder body of the engine, a trigger coil of the engine self, an oxygen sensor arranged on a vent of the cylinder body of the engine or on a silencer; the actuator comprises an electromagnetic valve arranged on a carburetor, a carbon canister electromagnetic valve connected between a carbon canister and the carburetor, and a system state indicating lamp arranged on an instrument panel. The electronically-controlled system of the small engine combines with the technology of exhaust gas after-treatment, can ensure that emission of exhaust gas can fulfill national phase III emission regulation for motorcycles, Europe III and Europe IV emission regulation for the motorcycles and fuel evaporative pollutants emission regulation, and can maintain or improve economical efficiency, dynamic property and driving comfort property of the motorcycles simultaneously.

Description

technical field [0001] The invention relates to an engine control system, in particular to an electronically controlled carburetor oil supply system and a fuel evaporation pollutant treatment system for a motorcycle engine. Background technique [0002] In the prior art, the fuel supply systems of motorcycles are generally divided into two types: carburetor systems and electronically controlled fuel injection systems. [0003] The carburetor oil supply system is simple in structure and low in cost, but the control accuracy of the air-fuel ratio is not high, and it is difficult to better control the emission of harmful exhaust gas. As emission regulations increase, it becomes increasingly difficult to cope with carburetor systems. [0004] The electronically controlled fuel injection system can accurately control the air-fuel ratio, effectively control the emission of harmful exhaust gas, and provide a guarantee for the high efficiency of the exhaust after-treatment device, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/26
Inventor 李汉伟于英桓蒋莉黄建宏李建春
Owner ZHANJIANG DENI VEHICLE PARTS