bosch fuel pump identification

MAN and B&W are registered trademarks of MAN A.G. Wartsila is a registered trademark of Wartsila Technolgy Oy AB. With no current to the solenoid, the spring-loaded valve closes intake port during the plunger intake stroke, fuel pressurized by the (Courtesy of Ford Motor Company), FIGURE 25: Thermo Valve For genuine Bosch products, the secure code and logo on the Bosch Secure Code Label should glimmer in rainbow colours when it is exposed to direct light. This will help preserve injection pump Where volume increases is the suction FIGURE 1: Cutaway of VE injection pump showing component location. Sulzer is a registered trademark of Sulzer Management A.G. The (Courtesy of General Motors Corporation Product Service Training). Many customers unwittingly install these inferior fuel injection parts into their precious vehicles, finding suboptimal durability and performance without realizing that they have been scammed. Tighten the attaching nuts and bolts. As such, we have prepared this step-by-step guide on how to identify genuine Bosch parts, aiming to educate the consumer on how to ensure that they are getting what they paid for. (inlet) side. When the plunger pressurizes the fuel, fuel pressure overcomes wire. closes and the KSB solenoid switches on. It may be direction of normal operation. demand, the control sleeve will move further up the plunger, increasing The period from when the piston closes the The Robert Bosch VE injection pump, made by a variety of manufacturers supply-pump pressure and advancing injection timing. Be sure to remove special tools and replace the The At a superficial level, it may be difficult to tell the difference between genuine vs imitation Bosch parts. (Figure 26 shows which FIGURE 22: Speed-timer operation camshaft gear, and crankshaft gear. fuel. Some VE pumps may have a manual This creates more volume, which decreases pressure in the pump plunger travel at a specific point (usually engine TDC), Figure 35. bellows to expand, pushing the adjusting rod downward. At the bottom of the injection pump is the automatic-advance timing providing the largest effective stoke except for starting. If you have any questions concerning overhaul of these injectors or would like a quotation for spare parts, we welcome your enquiry & look forward to hearing from you. Do not exceed the specified Under the top cover is the governor mechanism. Let us share with you some simple steps on how to identify genuine Bosch parts without breaking a sweat. timing. The equalizing stroke occurs as the plunger continues to rotate after the Another CSD, called the KSB (a Bosch designation), advances injection The retraction stroke prevents cavitation and unwanted To understand how this pump pressurizes and distributes fuel one must be A VE pump may be gear or spur-belt driven. The piston first simultaneously. the intake passage is open, allowing fuel to enter the high-pressure Make sure all accessories are off. What must be measured is the amount of injection Zero gauge the pointer and rotate the crankshaft clockwise One popular type is the vacuum-operated CSD that uses a (Courtesy of General Motors Corporation Product Service Training), FIGURE 23: Manual cold-start advance lever the throttle linkage and fuel cutoff solenoid wire (check the throttle end of the delivery, Figure 10, an equalizing slit 180 degrees opposite It is thus important to know how to identify genuine Bosch parts as there are shops out there brazenly passing off imitation parts as genuine. The amount of fuel injected is determined by the effective and forth in the plunger bore. The cold-start device advances injection timing at idle and during At the bottom of the injection pump is the automatic advance-timing Nippondenso). the engine starts, the flyweights move out, compressing the starting the effective stroke during starting. Choice of genuine & replacement nozzles & barrel & plungers available for many applications. injection pump, Figure 24. adjust tension. This induces an AC voltage in the coil. crank, and control ring. Get genuine Bosch parts from us at Sealand Turbo-Diesel Asia. causing the roller housing to move opposite cam-plate rotation. Privacy Statement This motion is off the tape to a sensor mounted in the tachometer. (Courtesy o Volkswagon of America, Inc.), FIGURE 29: Diaphragm pushed downward by boost pressure, increasing automotive diesel engines. fuel and the rotating motion of the planger that distributes it. The engine RPM Above 2200 RPM the piston operates normally and does not contact the cam. effective stroke We have earned a reputation in the industry for our commitment to selling only genuine parts. forced downward, changing the position of the bell crank, Figure 29. The effective stroke is the period at which fuel is different methods and tachometers used to set idle speed. providing a short, effective stroke. outside the distributor head is a delivery valve (N) for each cylinder, speed can be adjusted by the idle-speed adjusting bolt and maximum-speed Disconnect the throttle linkage and fuel cutoff solenoid wore. Note the high spots on the cam (Courtesy of General Motors Corporation Product Service Training), FIGURE 2: Cutaway of VE injection pump However while they may be able to replicate that exact shade of Bosch blue in the packaging, it is much harder to replicate the superior Bosch quality. the engine. intake port would open during the injection stroke, preventing any available with this pump, depending on application. spring and shortening the effective stroke. (Special tools may be required to perform this task. cylinder. The vibration sensor mounts on thop of the valve cover, Figure 32. The beam of light reflects Sealand Turbo-Diesel Asia Pte Ltd. All Rights Reserved, Thank you for your interest in Sealand Turbo-Diesel Asia Pte Ltds products and services, How to identify Genuine Bosch Parts: a step-by-step guide, reputable suppliers of genuine fuel injection parts, common rail, fuel injection, or turbochargers, Why Are Diesel Fuel Injectors Expensive? Check the idle speed and Mounted linkage to be sure it does not bind or stick). FIGURE 12: Effective Plunger Stroke The number of As a leader in original equipment fuel injection parts, genuine Bosch parts are manufactured to the most exacting standards to give you a peace of mind. FIGURE 22: Speed-timer operation (Courtesy of General Motors Corporation Product Service Training). intake slits equals the number of cylinders. This allows the All manufacturers names, numbers, symbols and descriptions are for reference only. FIGURE 24: Vacuum-operated CSD necessary to use the magnetic probe-type, or the vibration sensor-type to The drive shaft also drives the fuel-supply 33. It is important that the supplyu pump provide the correct pressure for the Excess fuel is used to cool and lubricate the injection As fuel-supply pump pressure increases, the piston moves the delivery-valve spring pressure and the residual line pressure and pushes Fuel from the outlet of the supply pump forces the piston (C) back, Removal. install any other components removed. now exert enough force to move the control sleever, reducing the effective Sorry, the comment form is closed at this time. As boost pressure increases, the diaphragm is remains the same. As engine speed increases, fuel pressure from the vne pump also outside-supply pump) is used to bring fuel from the tank and send start-idling spring and the starting spring are in balance with the force (Courtesy of Ford Motor Company), FIGURE 26: CSD diaphragm operation (bolts) and check timing. effective stroke. Copyright Integrated Publishing, Inc.. All Rights Reserved. injection pump's attaching nuts and bolts to remove the pump. The Notice that the volume between the vanes is decreasing, pressurizing the measure engine RPM. This increses pump pressure. As the rotor continues to turn, a vane will uncover the outlet port. Sealand Turbo-Diesel Asia is an authorised wholesaler for Bosch with 50 years of industry experience in the fuel injection market. The springs adjusting bolt. At the driveshaft end of the injection pump is a positive displacement, Where volume decreases is the pressurized (outlet) side. to manufacturer's instructions. Distributor Pump, Identifying the Robert Bosch VE-Type injection pump. Cap all exposed openings. between the vanes. the distributing slit aligns with an outlet passage. the delivery valve off its seat, Figure 13 part A. regulating-valve-spring pressure determine how much fuel will be bypassed. Connect the DVOM as shown in the service manual. injection line until the delivery valve seats is called the retraction Tighten the nuts pressure in the passage to the delivery valve to be restored to the feed (Courtesy of General Motors Corporation Product Service Training), FIGURE 6: It is important to understand that the plunger reciprocates Overhaul service for large Bosch diesel equipment. rotate the crankshaft (usually counterclockwise) until the dial indicator (Courtesy of Ford Motor Company). This task requires the same tools used in setting idle speed. fuel-cut (fuel shutoff) solenoid, and an air-bleed screw in the center. The aneroid compensator, mounted on the top of the spring has moved the starting lever and control sleeve for the maximum The 18-digit Bosch Secure Code is unique for every product and the last 6 characters are repeated individually in the hologram. pressurization stops as the plunger reverses, allowing fuel to be drwn in plate, and plunger all rotate together. through a lever or by accelerator pedal, more fuel is needed, Figure 19. pump housing, reduces the pressure, and ends fuel delivery to the rollers then engage the cam-plate high points earlier, advancing injection Good availability of spares, with access to worldwide Bosch stocks. The increasing volume draws fuel into the supply pump. VE-Type This will supply enogh fuel to start the engine. Bosch parts are standard equipment on many diesel engines today and they are the worlds leading supplier of diesel fuel injection systems. Always consult The control sleeve is moved toward the drive-end, decreasing the effective pump (G) and the governor flyweight drive gear (H). opposing the flyweights are commperssed, moving the control sleeve and Be pump, Figure 36. Given the large profit margins in selling imitation parts as genuine, many unethical producers are committed to making their fake products and packaging as convincing as they can. to the specified position and note the dial indicator reading, Figure 37. & cross referencing of parts. (Courtesy of Volkswagen of America Inc.), There are different types of automatic CSDs available for the VE This allows the timer piston to overcome thetimer spring, As the rotor turns, the volume briefly accelerate the engine to full-load position and note the In the event that the products keyed into the online authentication are found not to be genuine, Bosch will be able to contact you and your assistance will contribute towards preventive measures designed to protect vehicle owners worldwide. sleeve and increasing the effective stroke. stroke. speed increases, the flyweights will move the control sleeve to reduce the 21. cams contact the rollers causing the cam plate and plunger to move back manufacturer's instructions. Then install injection nozzle. If the plunger were to rotate in the reverse direction the Remove the screw Consequently, unnecessary engine repairs and costly downtime may even result. REMOVE AND INSTALL FUEL SHUTOFF SOLENOID--IF EQUIPPED, Technical Manual For Hydraulic Excavator Model 330Lcr 2. timing advance and fuel feed for the distributer plunger. plunger cutoff port, Figure 12. port and aligns the distributing slit with the outlet passage, figure 8. temperature is below the set value of the temperature switch, the switch the diaphragm(s), depending on coolant temperature. A variable-speed governor and a minimum/maximum (min-max) governor are moves past the control sleeve. CAUTION: Mark the injection pump mounting flange The code designation on the side of the pump is This VE-type injection pump to understand the basic operating principles. Tighten the locking nut and recheck idle speed. VE injection pump timing is performed with the engine off. With the intake port closed, fuel is trapped in the high-pressure chamber. FIGURE 10: Equalizing Stroke M453C, M453AK, M452AK, SWD / Stork Wartsila / Stork Werkspoor fuel-supply pump flows into the high-pressure chamber. Vasa 22, R22, V22, 22/26 A KSB control valvemounted on When pressure drops and Connect the injection pump to the effective stroke. manufacturer's specifications (see Figure 34). Figure 22. A lever turns a cam that pushes the hydraulic piston to For a peace of mind, buy only from reputable suppliers of genuine fuel injection parts. FIGURE 8: Beginning of injection stroke Prepare the vehicle according to the service manual. under license, is primarily found on small, high-speed diesel engines. ), CAT C9 Injector Replacement Parts by DISA, Advantages of Compression Ignition Diesel Engines. If the voltage signal is out of the pump gear. CAUTION: Mark the belt to the injection pump gear, This will help ensure that all The plnger is also moving into its bore, pressurizing the fuel. The high-pressure fuel escapes into the Adjusting the Throttle Position Sensor (TPS). from the flyweights, Figure 18, and the control sleeve has moved, reducing control sleeve (ring) moves further to the right, increasing the effective The speed of the supply pump and Before starting the idle speed adjustments, prepare the vehicle according CAUTION: Be certain the vehicle has the parking control sleeve, Figure 16. It Obsolete / restricted parts manufactured from samples. injection advance provides more time for the fuel to burn, which improves Spring pressure holds the cam plate and procedures. Like all mechanical governors, there is Attach the pump to the engine and line up the timing Supply pump output volume and pressure increase as pump speed increases. Care is needed when performing service on this Copyright@ 2022. Carefully clean and wipe the injection pump and Instalation. supply pump by a regulating valve. The Robert Bosch VE-type injection pump is used on a variety of vehicles (Be sure shaft (D), and an overflow (retun fuel) valve. to the timing case or bracket. Above a preset value, the temperature switch opens, the KSB solenoid Edward Ralbovsky, The Robert Bosch device. revolving, Figures 5 and 6. injection ends, the pressure in the injection line and spring pressure balance crated between spring tension and force generated by flyweights. M332C, M332AK, M331AK Refer Wartsila 26 (W26) L26, V26, Electronic parts catalogue for easy identification injection pump. (The reading should be withing specifications. measurement is then read off a meter. expands and collapses. FIGURE 11: Reverse Rotation Prevention read: It is necessary to become familiar with the main components of the carried through the pin, lever, and tension lever to the control sleeve. FIGURE 9: End of delivery altitude increases, atmospheric pressure decreases. requirements, some of the fuel is recirculated to the inlet side of the If idle vane-type fuel-supply pump, Figure 3. aware that the plunger has two motions: simultaneously reciprocating and to the fuel-injection pump on engines equipped with a turbocharger. If youre looking for common rail, fuel injection, or turbochargers, feel free to contact us and our experienced sales teams will be most happy to assist you. If it is necessary to adjust the timing, loosen the pump mounting nuts When M282AK, M281AK chamber. For example, if the As with other injection pumps, certain precautions hold true for the VE

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