The launch of vp36 vp37 edc electronic diesel control systems signifies this step towards improved closed loop controls. These systems are similar to mechanical distributor pumps but with electronic controls for fuel metering and injection timing. Common rail diesel uses a single fuel rail to supply fuel to the electronically controlled injectors under extremely high pressure. The result was a revolutionary new design the first single cylinder, opposed plunger, inlet metering rotary distributortype diesel fuel injection pump. In the case of the axialpiston distributor pump, fuel is supplied by a vanetype pump. With this type of distributor injection pump, an electronically controlled highpressure solenoid valve 5. Please find attached a technical instruction manual on bosch diesel distributor fuelinjection pumps. An injection pump is the device that pumps diesel as the fuel into the cylinders of a diesel engine. The code designation on the side of the pump is read.
Injection pumps are generally of two types, zjerk type pumps zdistributor type pumps. Pdf diesel distributor fuelinjection pumps technical instruction. Traditionally, the injection pump is driven indirectly from the crankshaft by gears, chains or a toothed belt often the timing belt that also drives the camshaft. Fuel injection system distributor type pumps there is a central longitudinal passage in the rotor and two sets of radial holes located at different heights. The injection pump is an inline, plunger type, with an individual plunger and barrel pumping element for each engine cylinder. Pump name plate fie asy code id code for s regulation id code for production serial numbers injection pump no. What is the difference between an inline injection pump. Diesel distributor fuelinjection pumps technical instruction. The american society of mechanical engineers rotary. One set is connected to pump inlet via central passage whereas the second set is connected to delivery lines leading to injectors of various cylinders. Diesel distributor fuelinjection pumps ve the reasons behind the.
Common rail system injection pressure control injection timing control injection rate control injection quantity control cylinder injection quantity correction electronic control type common rail system conventional pump. The distributor part of the rotor has a central axial passage which connects the pumping spacebetween the plungers with thefour inlet ports and single distributing port drilled radially in the rotor. The fuel is drawn into the central rotor passage from the. Mounted outside the distributor head is a delivery valve n for each cylinder, fuelcut fuel shutoff solenoid, and an airbleed screw in the center. Pump rotation clockwise or anticlockwise builtin mechanical governor builtin hydraulic timing device fuel lubricated speed andor load dependent timing devices mechanical andor electrical shutoff manual or automatic start retard self venting system distributor fuel injection pumps dpa type technical parameters features. Pressurized fuel then flows from a transfer pump porting screw through a passage on the side of the housing, through the head locking screw to a passage through the hydraulic. The governor weight retainer works with the principle of centrifugal. Ive seen the diesel distributor fuelinjection pumps ve technical instruction which is super helpful for understanding concepts but are there service or. The mechanical petrol injection pump is obsolete now and it is been replaced by electronic petrol injection pump so that a higher accuracy is maintained w. Model based tuning of a variable speed governor for a. S4s distributortype fuel injection pump specification may differ in detail 44. Diesel distributor fuel injection pumps technical instruction.
Injectionpump designs 6 mechanicallycontrolled governed axialpiston distributor fuelinjection pumps ve fuelinjection systems 8 fuelinjection techniques 9 fuel supply and delivery 12 mechanical enginespeed control governing 22 injection timing 29 addon modules and shutoff devices 32 testing and calibration 45 nozzles and nozzle. Pdf rather obsolete, mechanical governors are still used in an. Complex theories or special functions are omitted in this manual in. Distributor type fuel pumps trouble shooting guide. From the transfer pump the fuel passes through a passage in the hydraulic head to an annulargroove surrounding the rotor, and thence to the metering valve. Producing the high fuel pressure required for injection 2. Robert bosch vetype injection pump martins marine engineering. View and download mitsubishi s4s service manual online. Injection pump designs 6 mechanicallycontrolled governed axialpiston distributor fuel injection pumps ve fuel injection systems 8 fuel injection techniques 9 fuel supply and delivery 12 mechanical enginespeed control governing 22 injection timing 29 addon modules and shutoff devices 32 testing and calibration 45 nozzles and nozzle. Fuel injection pump, rotary 005014 electrical shutoff valves. Bosch distributor fuel injection pump type ve 2 giordano. The ignition of the fuel does not start immediately but the heat of compression starts the. Solenoidvalvecontrolled distributor injection pumps. A distributor type fuel injection pump has an accumulator.
It rotates at half crankshaft speed in a conventional fourstroke diesel engine. When an internal combustion engine is in lowspeed rotation or in lowload operation, the accumulator accumulates part of the fuel pressurized within a fuel compression chamber, thereby lowering the fuel injection rate. Injection timing injection timing confirmation procedure 1. That is the control mechanism of the fuel injection. Hi all, ive decided to try and replace the main shaft bushings in my vw 068081f bosch ve 0460494182 1.
If a distributortype injection pump is used, the fuel cylinder by the injectors. Foreword this service manual describes the construction and operation of the vp 44 radial plunger distributor type fuel injection pump. The fuel injection pump governor performance and setting. The fuel then flows into the vane type transfer pump where it is pressurized from 0 to approximately 160 psi depending on pump speed. A distributor pump has one highpressure pump and uses a rotary valve to distribute highpressure fuel to each cylinder. Distributor type fuel pumps starting problem guide. As the drive shaft rotates, the governor weight retainer also rotates. The distributor type injection pump is still used today however, with an electronically programmed injection control as a reasonable alternative for use in smaller to midsize diesel engines with a maximum of six cylinders. Ca the fuel system distributor type injection pump through a fine nylon gauze filter to the inletside of the transfer pump. This type of injection is operated mechanically with the help of a pump, distributor, etc. Get the most out of your vehicle with our free distributor type fuel pump troubleshooting guide here.
The robert bosch model pes 6mw injection pump is used on the international dt466c diesel engine. The engine computer controls fuel injection duration and timing to allow for higher efficiency and power. To verify that the fuel injection pump is timed correctly, first check the alignment marks on the pump flange and gear housing. It was the smallest, simplest fuel injection pump the world had ever seen, at. Distributor type fuel pumps trouble shooting guide united fuel injection create an account. Dynamic testing of a closed loop diesel engine governor injection system is conducted within comprehensive 1d multidomain simulation environment.
This manual covers the electronic control models ecdv3, ecdv3 rom, ecdv4, and ecdv5 of the electronically controlled, distributor type fuel injection system, including actual examples. The fuel injection pump is a fuel distribution type pump that supplies fuel to each cylinder of the engine through a distribution shaft by using a single plunger unlike conventional rail system or distribution system pumps. Pdf diesel fuel injection pumps, dpa lucas cav type. In a construction, kept as compact as possible, it distributes the fuel, by means of a cylinder and a plunger, under high. The distributortype fuel system that will be discussed is the db2 roosa master diesel fuelinjection pump, manufactured by stanadynes hartford division. Distributortype fuel systems construction training manuals. A rotating member, called a rotor, within the pump distributes fuel at high pressure to the individual injectors in engine firingorder sequence. Distributor type injection pump, electronic diesel control. Lucas cav injection pump parts here 1 2 what is a breakdown diagram a lucas diesel fuel injection pumps dpa lucas cav type mechanical fuel pumps.
Here are some possible cause and solutions for your distributor type fuel pump vehicle if you are facing starting problem. The bosch ve pump is primarily found on compact and automotive diesel engines. Pdf diesel distributor fuelinjection pumps technical. Fuel from the tank is supplied to the ve type distributor fuel injection pump via a fuel filter. Identifying the robert bosch ve type injection pump the robert bosch ve type injection pump is used on a variety of vehicles and is made under licenses by other manufacturers diesel kiki and nippondenso. Read online manual setting of cav injector pump timing. Fuel injection pump distributor type the fuel injection pumps, bosch ve, lucas cav dpa, stanadyne db4, and lucas cav dps, are rotary distributor. Working of a fuel injection pump rotor type explained. Mounted outside the distributor head is a delivery valve n for each cylinder, fuel cut fuel shutoff solenoid, and an airbleed screw in the center. Working principles, repair and testing of pe a type, multicylinder fuel injection pump with rsv and rqv governors, ve distributortype fuel injection pump, addon modules fitted on pe a and ve pumps, injector, injection timer, feed pump and filters, injection timing setting. Radial rotary injection pump basic operation distributor functionssend fuel to plungerstime duration in close position of electrovalve determines the injection flow sistemas automoveis anolectivo20092010 radial rotary injection pump basic operation distributor functionssend fuel to injectorsthe plungers are pressed by cam. This one has six pumps, one under each outlet port. The transfer pump is also a positive displacement vane type.
I over tightened the timing belt and now the main shaft has about. Figure 562 the stanadynedb4 injection pump uses four opposed plungers. Electronically controlled distributor type fuel injection. It is enclosed in the end cap, which also houses the fuel inlet strainer and transfer pump pressure regulator. S6s distributortype fuel injection pump specification may differ in detail. The distributor rotor incorporates two charging ports and a single axial bore. Metering the exact amount of fuel for each injection cycle 3. The distributortype fuel system is found on small to mediumsized diesel engines. Also, the fuel injection pump is provided with compensator which operates simultaneously with the accumulator.
Identifying the robert bosch vetype injection pump the robert bosch vetype injection pump is used on a variety of vehicles and is made under licenses by other manufacturers diesel kiki and nippondenso. Pressure generation, and distribu tion to the individual engine cylinders, is. Its operation is similar to an ignition distributor found on gasoline engine. Injection pressure is more than double the current pressure, which makes it possible to greatly reduce particulate matter. Pdf model based tuning of a variablespeed governor for a. The cav distributor type fuel injection pump type dpa. Cav injection pump full strip down to re seal and stop fuel leaks duration. Bosch distributor type injection pump with electronic diesel control veedc provide stringent emission norms and customer requirements on driving comfort and performance. The fuel is supplied with the help of a presupply pump if the tank is located at a lower position compared to the fuel injection pump. Fuel is pressurized in the fuel injection pump and then delivered to the nozzles. Injection pump the main objectives of fuel injection pump is to deliver accurately metered quantity of fuel under high pressure in the range from 120 to 200 bar at the correct instant to the injector fitted on each cylinder. The main difference between carburetor and fuel injection system carburetorzfuel is atomized by processes relying on the air speed greater than fuel speed at the fuel nozzle, zthe amount of fuel drawn into the engine depends upon the air velocity in the venturi fuel injection systemzthe fuel speed at the point of delivery is greater than the air speed to atomize the fuel. At the point of injection, the keyway of the shaft will.
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