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About three of the country you should know
2016-05-24 16:58:19   SOURCE:   

One, the country three and country two difference簡單直觀來說:油泵不同,加了線束,EGR和一些傳感器。對電控單體泵來說必須有

One, the country three and country two difference

Simple and intuitive: the fuel pump is different, plus the wiring harness, EGR and some sensors. For electronic unit pump must have steady low voltage DC 12V or 24V, power equal to stop; pump structure principle is completely different from the previous; unit pump replaced without adjusting the fuel supply advance angle, but the mechanical phase; some relevant parts although there is no change in the assembly and service, but the accuracy and requirements of the different, belong to a country special parts, can not be compared with the previous two interchangeable parts, such as a fuel injector, diesel filter,.

Two, the use and maintenance of the three engine

Selection of fuel oil, lubricating oil and cooling water

Dongfanghong series of three diesel engine must be consistent with the use of GB252-2011 national standard environmental temperature index of light diesel oil; lubricating oil must be used chevron or not less than chevron standard brand lubricants, CF-4 and above oil grade diesel engine oil; when the Celsius temperature below 0 DEG C for filling antifreeze, it is recommended to use the Great Wall FD-2L coolant.

Fuel oil circuit exhaust

For the first time use, without repair or long holding time of diesel engine, before the start of the first to rule out the oil in the air, to ensure a smooth start the diesel engine; the method is: first loosen the diesel filter bleeder screw, by hand pressure pump oil, until the release of the fuel no bubbles so far, and then tighten the diesel filter bleeder bolt. After the release of high pressure fuel injection pump nozzle, pump oil pump by hand, the same gas until the fuel so far no bubble.

Start and stop of diesel engine

Start the engine should be determined before the transmission is in neutral position; to avoid downtime due to battery power consumption leads to the difficulty in starting and OEMs should be to install the battery master switch, users after the shutdown to turn off the master switch.

Engine maintenance

Oriental red country three models used by the diesel filter core, for the high filter precision of the filter, the use of inferior filter, maintenance is strictly prohibited, otherwise it will lead to the engine fuel system failure. Other key points of maintenance and the same as the two power requirements.

Three, the common faults of electric control unit combined pump and its elimination

Diagnostic instructions

The electronic controlled engine fault is not necessarily the problem of EFI system; in most cases, failures are still with the conventional engine the same machinery and fuel line fault, maintenance experience is very important, such as fault indicator light does not shine, maintenance should be main inspection and check the mechanical fault. When the fault indicator lights up, indicating that the EFI system fault, at the maintenance can read the fault code and corresponding work.

Description of fault indicator

The lamp is located on the dashboard; color is red; after the ignition is switched on, system of lamp fault line for self, lit lamp failure, such as no failure occurred, the fault lamp in 2 seconds out; after the disappearance of the EFI system fault malfunction indicator lamp goes out.

Could not start:

Serial number

Possible causes

Solution method

One

ECU electric fuse burn out

inspect

Two

Circuit master relay does not work

inspect

Three

ECU power cord is connected to the circuit diagram

inspect

Four

Battery voltage is not enough

Replacement battery

Five

ECU bad

Change ECU

Six

Low pressure oil circuit in the air

Net air

Seven

Low pressure oil circuit

drainage

Eight

Low pressure oil circuit in the diesel filter, oil pipe and other completely blocked

Eliminate blockage

Nine

Diesel oil in the tank is too little or no diesel oil

come on

Ten

Multi cylinder injector failure

repair

Eleven

Pressure stabilizing valve failure

replace

Twelve

Oil pump

Repair or replace

Thirteen

Oil pump cam shaft

Replacement parts or fuel injection pump assembly

Fourteen

EUP plunger multi cylinder card die

Change EUP

Fifteen

Wiring harness and the corresponding relationship between the electromagnetic valve

According to the corresponding relationship

Sixteen

Crankshaft, cam sensor failure does not work

Adjust the thickness of the gasket or replace

Seventeen

Electronic throttle sensor wiring

According to the corresponding relationship

Eighteen

Engine intake block

Eliminate blockage

Nineteen

Engine drag speed is too small

Initial drag speed is greater than 130rpm

Twenty

Mechanical installation, phase difference

According to the corresponding relationship between the installation

Twenty-one

Calibration problem

Modify calibration data

Start-up difficulties:

Serial number

Possible causes

Solution method

One

Low pressure oil circuit in the air

Net air

Two

Crankshaft sensor is not working properly

According to the drawings, wiring (magnetoelectric) adjusting shim or replacement

Three

Cam sensor is not working properly

Adjust gasket or replace

Four

The crankshaft sensor does not work

According to drawing wiring, adjustment or replacement

Five

Cam sensor does not work

According to drawing wiring, adjustment or replacement

Six

Low pressure fuel oil filter, oil pipe, etc.

Eliminate blockage

Seven

Multi cylinder injector failure

repair

Eight

EUP plunger multi cylinder card die

replace

Nine

EUP wear and tear is serious, low speed oil is small

replace

Ten

Engine intake block

Eliminate blockage

Eleven

Engine drag speed is too small

The initial drag speed requirement is greater than 130rpm

Twelve

Diesel oil in the fuel tank is little

come on

Thirteen

Mechanical installation, phase difference

According to the corresponding relationship between the correct installation

Fourteen

Calibration problem

Modify calibration data

Idle travel:

,

Serial number

Possible causes

Solution method

One

Low pressure oil circuit in the air

Exclude air

Two

Diesel oil in the fuel tank is little

come on

Three

EUP each cylinder fuel supply uneven degree difference

Adjust the cylinder oil supply correction value

Four

Crankshaft sensor is not working properly

According to the wiring diagram (and adjust or replace the magnetoelectric).

Five

Low pressure fuel oil filter, oil pipe, etc.

Eliminate blockage

Six

ECU power supply shortage

Charge the battery

Seven

Calibration problem

Modify calibration data

Rev.

上一篇: The acquisition of Man Hummel Heng Qiang strong overlord affinia filter

下一篇: The implementation of the four standard rule-based filter production.

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