|
|
|
||||
|
|
|
|
|
|
Download ┃ News |
|
VID system has two steps. The first step is input of fine energy of high frequency into the intake stroke. (in case of the compression ignition engines, it is done before the fuel injection at the compression stroke) The second step(only for the spark ignition engines) is input of a main spark into the expansion stroke. Both steps are controlled by the fuzzy control unit. Recognition and response of VID is done immediately at any running condition of engines like forward control. VID dose not require power for own work and it works only while the car is moving Change at the spark ignition and compression ignition(diesel)engines Fine energy of high frequency enhances ionization of the mixture of fuel and air It makes the mixture gase to become optimum condition for combustion by activated molecular combination This improves efficiency of compression and brings homogeneous combustion
Fig2.Comparision of electric discharge at the expansion stroke ( around 2000rpm by BOSCH FSA560)
▷After capacity spark at spark plug induced lag wave is continued around -1.3kv ▷During the step of remaining discharge the voltage is dispersed and hunted sharply ▷Turbulence wave is generated and the voltage disappears ▷Lag time of discharge is 1.7msec ▷Secodary discharge voltage is about -1.3kv
▷After capacity spark at spark plug induced lag wave is continued smoothly around -2.0kv ▷The voltage is converted to oscillation wave without sharp shape. This means the molecular combination of fuel and air is activated by fine energy of high frequency ▷Lag time of discharge is 1.3msec ▷Secodary discharge voltage is about -2.0kv
In all of rpm range, the curve with VID shows more smooth
|
