The research and development of gasoline high pressure Direct Injection used on AX-100 two-stroke gasoline engine with low-cost, simple and reliable FAI(Free Armature Injection)is introduced in this paper. The intake system, fuel supplied system and combustion chamber suited for fuel Direct Injection was improved on the basis of original engine.
It was used to measure the static magnetic force, the dynamic characteristics of the armature, the coil current and the acceleration of the armature. Based on this device, experiments were carried out concerning on the influence of the boost voltage, the air gap and the spring to the response of the valve.
In order to research and develop FAI (Free Armature Injection) technic further , and improve the application of the FAI Injector, it is very necessary to develop an instrument which can measure fuel performace of FAI injector accurately and quickly.
A simple, reliable and cost effective FAI (Free Armature Injection) system is applied to a 98cc two-stroke engine in this dissertation. The combustion system for DISI is developed; a prototype engine is designed and then equipped on an AX-100 prototype motorcycle;
Analysis of armature reaction and winding inductances of permanent magnet brushless DC motor with deep slot concentrated coils
The influence of the exciting current and armature reaction on the DC voltage ripple of the generator is discussed in detail, and the nonlinear rules are gained that DC voltage ripple changes accordingly.
This microrelay is composed of a lower magnetic circuit, a planar exciting coil, and an upper magnetic armature.
The calculation results are used for the optimization design of the armature and the number of turns of the exciting coil.
Decomposition procedures are evolved of the synthesis of observers on the basis of measurements of positions of a manipulator and armature currents of electric drives.
This paper presented a detecting method in the gap of frictionelectromagnetic clutch by excitation current. It also showed a detecting circuit usedin test of service life. The gap δ_0 between disk and armature can be determinedfrom following equation: δ_0=a+bt_1Where t_1 is joining time, a and b are constants.
he mathematic model is built for the attracting process of the electropneumatic valve, numerical calculation of the dynamic characteristics is presented, and the influence of reaction factors on the dynamic characteristics of the valve is analyzed in detail. The calculated results show that the armature of the valve can be attracted more quickly to the minimum width of solenoid air gap after the circuit is turned on and the armature is touched, and to improve the response characteristics of the valve...
he mathematic model is built for the attracting process of the electropneumatic valve, numerical calculation of the dynamic characteristics is presented, and the influence of reaction factors on the dynamic characteristics of the valve is analyzed in detail. The calculated results show that the armature of the valve can be attracted more quickly to the minimum width of solenoid air gap after the circuit is turned on and the armature is touched, and to improve the response characteristics of the valve and to prolong the service life of the valve, it is favourable that the inlet pressure of the compressed gas and the precompression of the spring be properly decreased. The conclusions obtained may be used for reference to the design and manufacture of new electropneumatic valves and solenoid valves.
In electronic control diesel fuel injection systems of modern diesel engines, the high-speed, powerful solenoid valve is the key element to determine the performance of the systems. And there is a thin gap of fuel film exists between the armature and solenoid. This squeeze film directly influences the dynamic response characteristics of the valve. An analysis by laminar flow is undertaken to evaluate squeeze film behavior and determine optimum venting arrangement for improved valve performance.