[the home of the lorry is achieved formerly] rich world in all in rail system, fuel is metric and unit the component that is a quite easy attaint. When metric and unit occurrence breakdown, engine trouble lamp can shine above all, can accompany car travel at the same time faint, engine idle fast do not risk the breakdown phenomenon such as black smoke firmly to appear with tail gas surely.
Metric and unit interior construction is not complex, it has 3 parts to comprise: Have the case of electromagnetism coil, with the upper cover that contains oily aperture, still have a core of a powerful person that can move up and down. When its damage, change new it is OK to go up, charge also with respect to 339 yuan of money.
Good metric unit can make sure engine is in most the province moves normally below oily conditionMetric and unit general installation is in fuel the position of the opening that receive oil of high-pressured oil pump, it is a powerful person of electromagnetism of a scale, suffer electronic-controlled and unit (ECU) control, can control the oily amount that enters high-pressured oil pump, control thereby in all the oil pressure inside course canal. This component works goodly, it is normal to can make sure car is OK not only travel, still can make engine can be in most the province moves below oily condition, achieve the result of economic fuel.
When doing not have electrify, core of a powerful person is in often open the position, be located in the largest position that offer oil namely. After receiving electrify source only, ECU just changes metric unit to occupy sky comparing in-housely through pulse signal, will control the fuel amount that enters force plunger of high-pressured oil pump, control thereby in all the fuel pressure value inside course canal, reassurance engine is OK and good move.
Value of block of metric section coil is between 3.15 Europe of 2.6 ～ is normalWhen the breakdown phenomenon that when engine occurrence article begin describes, a simple method can judge the stand or fall that gives metric unit. Normally for, in room temperature when 20 ℃ , the coil resistance of metric unit is between 3.15 Europe of 2.6 ～ , if block value is not inside this limits, basically can judge its to damage.
Control line starts course of opportunity instant flameout to press exorbitant engine to be able to be restricted to twist to ground short circuit1, breakdown of metric and unit open a way: Contact high end and low end open circuit, or circuit outlet was not inserted good, the contact is undesirable, can cause open circuit trouble, right now metric and unit interior does not have electric current, core of a powerful person is located in the largest position that offer oil;
2, breakdown of metric and unit short circuit: Contact high end and low end short circuit, right now metric and unit itself loses electricity, core of a powerful person also is to be located in the largest position that offer oil;
3, metric and unit high end is right ground short circuit: Right now metric and unit itself also can lose electricity, namely metric unit does work no longer, core of a powerful person is to be located in the largest position that offer oil likewise;
Above means of 3 kinds of breakdown, can make in all the pressure inside course canal is exorbitant, at this moment, can bring about in all course pressure limiting valve can be opened, pressure release. Once appear in all course pressure limiting valve appears open breakdown, engine will enter gammy function, by limitative torque, show the breakdown phenomenon with faint drive a vehicle.
4, metric unit low end is right ground short circuit: Namely the control line of 3.5V takes iron.
This control line once short circuit reachs the ground, ECU general cannot continue to control metric unit, right now the electric current of metric unit can reach maximum, the metric and unit oil duct that often attends a meeting so is shut entirely, car can show the breakdown phenomenon of instantaneous flameout.
It is very important to avoid core of a powerful person to block sluggish to cause course to press fuel of exorbitant use qualification and bavin filterLast kinds of breakdown is sluggish of card of core of a powerful person. Be in when car for example decelerate is declivous when level, engine can enter decelerate to break oily pattern, can cut off fuel injector to offer oil namely, ask a powerful person of metric and unit electromagnetism should be to close position completely at the moment, prevent in all the oil pressure inside course canal lifts continuously. But if right now, core of a powerful person inside metric unit blocks sluggish, can make fuel is entered continuously in all inside course canal, oil pressure can lift continuously, cause pressure limiting valve to will be developed forcibly thereby, engine enters protective state, power and rotate speed are restricted, same meeting shows drive a vehicle faint breakdown phenomenon.
Fuel is metric and unit core of in-house a powerful person blocks sluggish or wear away prematurely, majority is caused too much by the impurity inside fuel, because this is about to beg calorie of friend besides should cheer in normal gas station beyond, still must the derv filter core of service mass qualification, such ability make sure the component on him car can use longer life.
The home that pays close attention to a lorry (the domestic _ commercial vehicle of mobile phone lorry is interactive service platform) , the net gets together the force of lorry person
Have any problems, greeting illicit believes us
