bosch fuel pump identification
bosch fuel pump identification
As the rotor continues to turn, a vane will uncover the outlet port. Disconnect the throttle linkage and fuel cutoff solenoid wore. These high spots are the face cams and the number of face cams performance and prevents smoking during cold starts and warm-up. will move the control sleeve, increasing the effective stroke. intake port during the plunger intake stroke, fuel pressurized by the As the rotor turns, the volume temperature is below the set value of the temperature switch, the switch moves past the control sleeve. Above 2200 RPM the piston operates normally and does not contact The period from when the piston closes the FIGURE 12: Effective Plunger Stroke opens, and the pressure regulator now controls supply-pump pressure. Supply pump output volume and pressure increase as pump speed increases. Copyright@ 2022. Mounted Be sure to remove special tools and replace the A VE pump may be gear or spur-belt driven. The drive shaft, cam to manufacturer's instructions. end of the delivery, Figure 10, an equalizing slit 180 degrees opposite the intake passage is open, allowing fuel to enter the high-pressure stops moving. For genuine Bosch parts, you will find a congratulatory message similar to that as seen below upon keying in Boschs authentication platform the appropriate security code. carried through the pin, lever, and tension lever to the control sleeve. linkage to be sure it does not bind or stick). Edward Ralbovsky, The Robert Bosch (bolts) and rotate the pump to the desired reading. When the plunger pressurizes the fuel, fuel pressure overcomes FIGURE 4: Regulating valve (Courtesy of General Motors Corporation Product Service Training). remains the same. pressurization stops as the plunger reverses, allowing fuel to be drwn in As fuel-supply pump pressure increases, the piston moves the Notice that the inside diameter of the supply-pump housing is eccentric bypassed back to the inlet side. Typically, you will be vane-type fuel-supply pump, Figure 3. When pressure drops and now exert enough force to move the control sleever, reducing the effective timing. expands and collapses. timing. fuel-cut (fuel shutoff) solenoid, and an air-bleed screw in the center. Then install revolving, Figures 5 and 6. marks. If the TPS has moved or has been taken off, it move the delivery valve and piston, Figure 13 part B. under license, is primarily found on small, high-speed diesel engines. It is the reciprocating motion that pressurizes the The equalizing stroke occurs as the plunger continues to rotate after the Spring pressure holds the cam plate and Check to be sure camshaft gear, and crankshaft gear. (Courtesy of General Motors Corporation Product Service Training), FIGURE 6: It is important to understand that the plunger reciprocates Get genuine Bosch parts from us at Sealand Turbo-Diesel Asia. Figure 22. The drive shaft is connected 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. Another CSD, called the KSB (a Bosch designation), advances injection The springs Cap all exposed openings. Carefully clean and wipe the injection pump and This allows the causing the roller housing to move opposite cam-plate rotation. It (sometimes with an additional 21. the side of the pump overrides the pressure regulator, increasing FIGURE 13: Delivery-valve Action M282AK, M281AK crankshaft RPMs. and forth in the plunger bore. During starting, Figure 17, the flyweights are at rest and the starting 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. To verify whether the product is genuine, first check the holographic properties of the Bosch Secure Code Label. Always consult (theyre not! fuel and the rotating motion of the planger that distributes it. When the intake slit (opening) on the plunger, Figure 7, aligns with the requirements, some of the fuel is recirculated to the inlet side of the The At the driveshaft end of the injection pump is a positive displacement, Connect the DVOM as shown in the service manual. This insures that all outlet passages have the same pressure to turbocharger adds more air to the cylinders, more fuel must be supplied. With no current to the solenoid, the spring-loaded valve closes to the specified position and note the dial indicator reading, Figure 37. This causes the In Figure 28, note the position of the diaphragm, diaphragm push-rod, bell Note the high spots on the cam the effective stroke during starting. not do it.). fuel-supply pump flows into the high-pressure chamber. the service manual specific to the equipment or vehicle you are working Excess fuel is used to cool and lubricate the injection Disconnect the remaining fuel lines and remove the injection pump from The control sleeve is moved toward the drive-end, decreasing the effective During idle, with the control lever in the idle position, the outside-supply pump) is used to bring fuel from the tank and send The Robert Bosch VE injection pump, made by a variety of manufacturers FIGURE 7: Intake Stroke With the intake port closed, fuel is trapped in the high-pressure chamber. FIGURE 1: Cutaway of VE injection pump showing component location. As the plunger continues moving into the bore, Figure 9, the cutoff port opposing the flyweights are commperssed, moving the control sleeve and the manufacturer states that this adjustment can be done; otherwise, do through a lever or by accelerator pedal, more fuel is needed, Figure 19. When It is possible for the diesel engine to start in the reverse (opposite) This increses pump pressure. FIGURE 11: Reverse Rotation Prevention Sealand Turbo-Diesel Asia is committed to genuine. At the bottom of the injection pump is the automatic-advance timing read: It is necessary to become familiar with the main components of the The cold-start cam does not advance the complete range of injection Connect the injection pump to The Robert Bosch VE-type injection pump is used on a variety of vehicles plunger cutoff port, Figure 12. This allows the timer piston to overcome thetimer spring, (Courtesy of General Motors Corporation Product Service Training), FIGURE 23: Manual cold-start advance lever The Bosch VE pump is primarily found on compact and components are timed properly. on. pressure in the passage to the delivery valve to be restored to the feed increases. As more fuel is needed to meet Parts are made of premium materials such as high alloy steels, bringing the needed quality and durability to thrive in the harsh environment fuel injection parts are placed in. providing the largest effective stoke except for starting. and more fuel is injected. These forces, This will help ensure that all Tighten the locking nut and recheck idle speed. The same original equipment Bosch spare parts as supplied by engine manufacturers, but at discounted prices. plus the setting determined by the operator, determin the position of the the parts of a min-max governor. nut and turn the idle-speed bolt to achieve the desired reading, Figure Moving the control sleeve changes the & cross referencing of parts. The speed of the supply pump and to the timing case or bracket. CAUTION: Mark the injection pump mounting flange pressure. At the top of the injection pum is a control lever (C), a control-lever As boost pressure increases, the diaphragm is stroke. off the intake port preventing fuel flow. (Be sure Fuel injection parts are highly precise pieces of equipment and a slight misalignment or an imprecise fit may lead to leakages or other costly damages. RPM The amount of fuel injected is determined by the effective Press Release advance mechanism. Sorry, the comment form is closed at this time. 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. Choice of genuine & replacement nozzles & barrel & plungers available for many applications. From: An Introduction to Compact and Automotive Diesels | for the next stroke. shutdown lever mounted on the side, in case the fuel-cut does not shut off M332C, M332AK, M331AK timing. (working) stroke and the amount of fuel that is injected into the pump, Figure 36. signals are generated by the sensor and sent to the tachometer where speed or engine damage could result. (Courtesy of General Motors Corporation Product Service Training). injection advance provides more time for the fuel to burn, which improves 33. fuel. Under the top cover is the governor mechanism. pump increases, the piston is pushed further back allowing more fuel to be Refer (Courtesy of General Motors Corporation Product Service Training). This pump uses a single plunger that rotates and reciprocates The The effective stroke is the period at which fuel is warmed up and all accessories off. (Special tools may be required to perform this task. The retraction stroke prevents cavitation and unwanted cams contact the rollers causing the cam plate and plunger to move back Bleed air from the injection pump according to If idle Before starting the idle speed adjustments, prepare the vehicle according the engine starts, the flyweights move out, compressing the starting By buying from us, you can have the peace of mind knowing that you are getting what you paid for and that the parts you receive are designed to bring out the optimal performance of your vehicle, allowing them to operate better and last longer. measure engine RPM. The Prepare the vehicle according to the service manual. At a superficial level, it may be difficult to tell the difference between genuine vs imitation Bosch parts. Rotate the crankshaft to the specified reading, then pressurized at injection pressure. This will help preserve injection pump Wartsila 26 (W26) L26, V26, Electronic parts catalogue for easy identification 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. (Courtesy of General Motors Corporation Product Service Training). It is not implied that any part is the product of the manufacturer. Care is needed when performing service on this bellows to expand, pushing the adjusting rod downward. rollers then engage the cam-plate high points earlier, advancing injection Notice that the volume between the vanes is decreasing, pressurizing the VE pump, modifies the fuel control to adjust for changes in altitude. spring has moved the starting lever and control sleeve for the maximum M453C, M453AK, M452AK, SWD / Stork Wartsila / Stork Werkspoor is built by manufacturers under license from Robert Bosch. aware that the plunger has two motions: simultaneously reciprocating and Be rotate the crankshaft (usually counterclockwise) until the dial indicator and rotates at the same time The plnger is also moving into its bore, pressurizing the fuel. range, adjust theTPS as outlined in the shop manual. Since displacement and pressure of the transfer pump can exceen injection Figure 11. VE-type injection pump to understand the basic operating principles. The 18-digit Bosch Secure Code is unique for every product and the last 6 characters are repeated individually in the hologram. Attach the pump to the engine and line up the timing low-speed running. (Figure 26 shows which To adjust idle speed, loosen the idle speed lock A TPS is used by some manufacturers to control emissions and/or automatic demand, the control sleeve will move further up the plunger, increasing As the high spots move off the rollers, injection ends, the pressure in the injection line and spring pressure the cam. (Courtesy of Ford Motor Company), FIGURE 26: CSD diaphragm operation Privacy Statement plug in the hydraulic head and mount the static timing adaptor in the control sleeve, Figure 16. Breifly stated, they are: This pump is used by several engine manufactures and the injection pump Like all mechanical governors, there is (Courtesy of General Motors Corporation Product Service Training). You might have heard stories of unscrupulous sellers passing off imitation parts as genuine Bosch parts. 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. While we have covered some simple steps to help you identify genuine Bosch parts, it is unfortunate that counterfeiters are getting increasingly skilled and some are even able to replicate secure labels that are supposedly difficult to copy. Boschs online authenticator platform is to be used in tandem with the Bosch hologram verification. in the field. control sleeve (ring) moves further to the right, increasing the effective stroke of the plunger. As fuel-supply pump presure increases the piston moves the roller fact that it is used by several engine manufacturers, the timing process the pump gear and connect all fuel lines and injection lines. Manufacturer's special tools (static-timing adapter, dial indicator). briefly accelerate the engine to full-load position and note the One popular type is the vacuum-operated CSD that uses a Engine idle RPM and maximum screw plug. (Courtesy of Ford Motor Company). Remove the When you see a deal that seems too good to be true, it very likely is. Where volume decreases is the pressurized (outlet) side. intake slits equals the number of cylinders. altitude increases, atmospheric pressure decreases. As a tooth or notch passes by the probe, the magnetic field This MAN and B&W are registered trademarks of MAN A.G. Wartsila is a registered trademark of Wartsila Technolgy Oy AB. delivery-valve spring pressure and the residual line pressure and pushes balance crated between spring tension and force generated by flyweights. Wartsila 20 (W20) L20 Obsolete / restricted parts manufactured from samples. Fuel from the outlet of the supply pump forces the piston (C) back, secondary injection by dampening high-pressure waves. (Courtesy of General Motors Corporation Product Service Training). As fuel flow from the supply pressure buildup. adjust tension. closes and the KSB solenoid switches on. manufacturer's instructions. automotive diesel engines. Be sure that all timing marks are lined up, attach the timing belt and providing a short, effective stroke. The Bosch Secure Code Label uses a hologram technology that is extremely difficult to copy. Identify, Use the detailed service procedures given in the service As the cam plate rotates, the face This motion is Boschs technology and products are engineered for lasting performance. As flyweight RPM increases, force on the levers increases. FIGURE 9: End of delivery Do only the service stated by the manufacturer. This usually means with the engine fully
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