The result was a revolutionary new design the first single cylinder, opposed plunger, inlet metering rotary distributortype diesel fuel injection pump. A vane pump forces the fuel into the highpressure chamber 6. Dieselengine management diesel distributor fuelinjection pumps technical instruction published by. Distributor injection pump a distributor diesel injection pump is a highpressure pump assembly with lines. The injection pump includes a control apparatus whose control member forms a threedimensional cam, which is rotated by a. Excess fuel is used to cool and lubricate the injection pump. The fuel system distributortype injection pump ca fig. The very high level of precision inherent in the distributor pump means that it is possible to precisely meter extremely small injection quantities to the engine. If the engine block or heads have been milled, make sure that the distributor will fully seat and not bind or bottom out on the oil pump drive. Throughout this period, roosa master engineers were busy working on making the pump even simpler, more versatile and less expensive.
If equipped with a fuel supply pump check for minimum of 23 psi fuel supply pump pressure. 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. Diastribubil timpe famiardection pumps bosch cnctechnw. Diesel distributor fuel injection pumps technical instruction. 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. Working mechanism of distributor type fuel injection pump used to pump pressurized fuel to ic engine cylinders in definite order indepth description of parts of the injection pump, and function. Fuel from the tank is supplied to the ve type distributor fuel injection pump via a fuel filter. Producing the high fuel pressure required for injection 2. What is the difference between an inline injection pump. Pdf cav dpa fuel injection pump workshop manual lucas. Foreword this service manual describes the construction and operation of the vp 44 radial plunger distributor type fuel injection pump. Leak off pipes tank fuel cock hand primer filter typical fuel system with gravity feed n z e. This one has six pumps, one under each outlet port.
The plungers are actuated simultaneously toward each other by an internal cam ring through rollers and shoes located in slots at the end of the rotor. Distributor injection pumps have only one pump unit that serves all cylinders figs. Simplicity, the prime advantage of this design, contributes to. A lift pump takes fuel from the tank and keeps the injection pump full with fuel electric or mechanical, on. The distributortype fuel system that will be discussed is the db2 roosa master diesel fuelinjection pump, manufactured by stanadynes hartford division. Jensales offers the finest in manuals, parts, and decals. A distributor pump has one highpressure pump and uses a rotary valve to distribute highpressure fuel to each cylinder. Bosch distributor type injection pump with electronic diesel control veedc provide stringent emission norms and customer requirements on driving comfort and performance. Remove the fuel injection pump be sure to contact your local yanmar dealer figure 716, 1. An overview fields of application 4 technical requirements 4 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. Coremannet return criteria pictures are exemplary f0550001061 version 2. The roosa master fuel injection pump is described as an opposed plunger, inlet metering, distributor type pump. The fuel injection pump governor performance and setting. It was the smallest, simplest fuel injection pump the world had ever seen, at.
The roosa master fuel injection pump is described as an opposed plunger, inlet metering, distributortype pump. The fuel injection pump has a fixed pump body 12 with a pumping chamber 20 having a plurality of plunger bores 16, a plunger 14 mounted in each plunger bore 16 for reciprocation, a cam 60 rotatable for reciprocating the plungers 14 to periodically supply an intake charge of fuel to the pumping chamber 20 and deliver a high pressure charge of fuel from the pumping chamber 20. Typical fuel system with lift pump filter back leakage pipe. Rotary distributor diesel fuel injection pump mafiadoc. Robert bosch gmbh, 1999 postfach 30 02 20, d 70442.
The number of injection strokes per cycle for the pump is. A, b, c on the fuel injection pump drive gear, idler gear, and crankshaft drive gear. The injection pump is an inline, plunger type, with an individual plunger and barrel pumping element for each engine cylinder. An overview fields of application 4 technical requirements 4 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. Electronic diesel control edc distributor injection pumps. These systems are similar to mechanical distributor pumps but with electronic controls for fuel metering and injection timing. Metering the exact amount of fuel for each injection cycle 3.
The distributor pump systems are used on small to mediumsize diesel engines. Return connector in injection pump plugged, due to governor coming apart. Fuel injection pump distributor type the fuel injection pumps, bosch ve, lucas cav dpa, stanadyne db4, and lucas cav dps, are rotary distributor. The distributor type injection pump with electronic diesel. 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. The launch of vp36 vp37 edc electronic diesel control systems signifies this step towards improved closed loop controls. Damage on cables as ragged, cut or provisionally repaired cable crimped acceptable acceptable mechanical damage. Pdf diesel distributor fuelinjection pumps technical. Fuel is pressurized in the fuel injection pump and then delivered to the nozzles. Rmsd series81624, rmsd series, roosa master, roosa master d injection pump service manual created date. Pdf diesel distributor fuelinjection pumps technical instruction.
The fuel injection system in a diesel engine consists of an injection pump, a fuel line and a nozzle also called an injector. In fuel injection pumps of diesel engines the damages of pressure injection systems can occur the typical form of damages are the material losses in the surface layers of cams and meshing rollers as well as the cracks of distributor plunger. The robert bosch model pes 6mw injection pump is used on the international dt466c diesel engine. Distributor system in this system the pump which pressurizes the fuel also meters and times it. It was the smallest, simplest fuel injection pump the world had ever seen, at a much lower price than anything available before. The distributor type fuel system that will be discussed is the db2 roosa master diesel fuel injection pump, manufactured by stanadynes hartford division. When the air is compressed, the pressure inside the cylinder briefly rises to 400 to 600 pounds per square inch normal atmospheric pressure is less than 15 psi, driving internal temperatures into the range of 800 degrees fahrenheit to 1,200 f 430 degrees celsius to. A fuel injection pump is disclosed for supercharged diesel internal combustion engines, in particular, a distributortype injection pump in which the fullload fuel supply quantity is limited by means of a variable stop, controlled in accordance with rpm and air quantity. Diesel distributor fuelinjection pumps technical instruction. The driveshaft engages the distributor rotor in the hydraulic head. Fuel pump after metering the required amount of fuel supplies it to a rotating distributor at the correct time for supply to each cylinder.
Cav dpa fuel injection pump workshop manual lucas cav cav minimec fuel injector pump ford 700 7700 tractor part. Read this before proceeding holley performance products. A central rotating member forms the pumping and distributing rotor, andthis is driven by. For purposes of future before replacing the fuel injection pump. The american society of mechanical engineers rotary. From 1947 to 1952, activities were concentrated on laboratory developments and experimental installations. Work began on the roosa master fuel injection pump in may, 1947. Us4308834a fuel injection pump for supercharged diesel.
543 544 545 812 1362 35 588 1203 1432 658 446 1229 499 858 341 1472 1074 260 780 293 1256 1320 227 1251 1075 36 781 786 1312