IMPORTANT INFORMATION ABOUT FUEL INJECTORS

1 B MOTORSPORT COMPONENTSB7 fuel INJECTORSIMPORTANT INFORMATION ABOUT fuel INJECTORSI mportant INFORMATION ABOUT Technical Specifications Bosch fuel INJECTORS have their flow rates defined in N-Heptane as part of their engineering specification. N-Heptane is a purechemical and does not have the same viscosity and density as standard petrol. Hence the N-Heptane flow rate figures statedshould be used as a general guide for comparison purposes only. For safety reasons, Bosch strongly recommends that Local and/or Federal Government health and safety regulations are adheredto when using or handling any of the mentioned test fluids. Stated Operating Pressure is the pressure that the fuel injector is designed to operate at to give optimal fuel atomisation andcontrol.

2 This is more critical to the EV1 pintle type fuel INJECTORS . Whilst it is common industry practice to request static flow rate only of a fuel injector, it is IMPORTANT to note that one type of valve group with a specific static flow rate can be used for a number of fuel INJECTORS with different dynamic flow rates. fuel flow specifications are given in grams per minute [g/min]. This is an internationally accepted standard at vehicle manufacturinglevel. As development engineers deal with the weight or mass of air inducted by an engine not its expected power rating, theweight of fuel that an injector can provide is the pivotal measurement. Bosch does not rate fuel INJECTORS related to expectedengine power Does Not Warrant the Performance of its Components when they are Used with Certain Fuels or fuel Additives.

3 Bosch fuel INJECTORS are designed for use with standard grade petrol. Subject to statutory warranties, Bosch does not warrant the performance characteristics or specifications of these fuel INJECTORS if they are used with Alcohol or Ethanol based fuels orfuel additives that are corrosive. fuel Injector 0 280 150 842 is designed for CNG operation only. Bosch has not tested this fuel injector for permanent serviceusing liquid fuels, therefore it is not recommended for liquid fuel control systems. Control issues may result due to internal valvegroup sensitivity to viscosity differences between liquid and gaseous Is Not Liable For Third Party Recommendations or Modifications Modification of fuel management systems should only be carried out by suitably qualified personnel.

4 It is the responsibility of thepurchaser/consumer to ensure the product is compatible with the fuel management system used to avoid damage and/or injury. In any event, subject to statutory warranties, Bosch is not liable for damage caused by third party recommendations or modifications. Modification of fuel management systems may cause a vehicle to contravene state or federal emission laws. Bosch does notendorse or recommend the modification of standard vehicles and does not accept liability for damages or consequential lossrelated to any modification B8 MOTORSPORT COMPONENTSP urpose and INJECTORS perform an IMPORTANT role in the accurate metering andatomisation of fuel . These electro-mechanical valves react in milli-sec-onds to open and close giving the electronic control unit optimal controlover fuel flow to the of flow specifications are given in grams per minute, as this is an inter-nationally accepted standard at vehicle manufacturing level.

5 As vehicledevelopment engineers deal with the weight or mass of air inducted by anengine not its expected power rating, the weight of fuel that an injector canprovide is the pivotal measurement. Bosch does not rate fuel injectorsrelated to expected engine power outcomes for this Ratings of fuel INJECTORS . [Horsepower]It has become an aftermarketperformance industry practice to rate fuelinjectors in relation to expected engine power outputs, this method of measurement has many issues in relation to various cal-culation methods, accuracy, individual interpretation and overall relevance,Bosch as an Original Equipment supplier of fuel INJECTORS , does not sub-scribe to this specification are many design requirements taken into account when under-taking the design and manufacture of a fuel injector to suit a particularapplication.

6 Further explanation can be found under the Method ofMeasurement heading in this of fuel Pressure on Pintle Type fuel velocity through a pintle type fuel injector [type code EV 1] can dra-matically affect its ability to atomise fuel . The profile of the pintle used in afuel injector has a direct relationship to the operating pressure it is designedto operate under. Whilst Bosch produce various fuel INJECTORS that may flowthe same amount of fuel at a given specification, the system operating pres-sure will influence the pintle profile. Correct pressure will result in a wellatomised spray, while insufficient pressure will result in a hosing pressure will result in either hosing or a spray angle that is toolarge for the targeted area dependent on the pintle consequence of excessive fuel pressure on a pintle type injector maywell be that as the pressure is increased the mixture values of the enginemay appear to get leaner.

7 This is of course not the case, but the fuel beinginjected is no longer atomised and is entering the cylinder as a liquid will typically cause the Hydrocarbon [HC] values to rise due to the rawfuel exiting the cylinder, and the Carbon Monoxide [CO] to drop due toinsufficient design fuel INJECTORS [type code EV 6] use director plate multi-ori-fice technology to better atomise fuel across various operating INJECTORS allow more flexibility in relation to operating pressures with-out compromising spray efficiency or fuel atomisation. APPLICATION NOTEFuel Injector 0 280 150 842 is designed for CNG operation only. Boschhas not tested this fuel injector for permanent service using liquidfuels;therefore it is not recommended for liquid fuel control systems.

8 Controlissues may result due to internal valve group sensitivity to viscosity dif-ferences between liquid and gaseous fuels.* IMPORTANT NOTEB osch fuel INJECTORS have their flow rates defined in N-Heptane as part oftheir engineering specification. N-Heptane is a purechemical and does not have the same viscosity and density as standardpetrol. Hence the N-Heptane flow rate figures stated should be used as ageneral guide for comparison purposes INJECTORSEV6 - Standard VersionEV6 - Long VersionFlow Qty*OperatingPart Numberg/min Pressure Resistance Design @ 3 Bar(Bar)(ohms)TypeConnectorCommentsB MOTORSPORT COMPONENTSB9 fuel INJECTOR TECHNICAL 11 284 485 002 Hose 19 122 067 011 Hose 19 122 067 011 Hose 19 122 067 19 122 067 19 122 067 011 Manufacturer Specific 19 122 067 19 122 067 19 122 067 19 122 067 19 122 067 19 122 067 19 122 067 011 Refer Application 19 122 067 19 122 067 19 122 067 69 122 067 011 Long 69 122 067 011 Long 69 122 067 011 Long 69 122 067 011 Long 69 122 067 011 Long 6 Non-Bosch PlugLong 69 122 067 011 Long 69 122 067 011 Dual Spray/Long 69 122 067 011 Standard 69 122 067 011 Long 69 122 067 011 Dual Spray/Long 69 122 067 011 Dual Spray/Long Body0 280 150 0360 280 150 1350 280 150 1660

9 280 150 2150 280 150 3630 280 150 4030 280 150 5580 280 150 7060 280 150 7750 280 150 7900 280 150 7910 280 150 8030 280 150 8420 280 150 9010 280 150 9600 280 150 9670 280 155 7770 280 155 8210 280 155 8440 280 155 8680 280 155 8900 280 155 9170 280 155 9310 280 155 9680 280 156 0120 280 156 0130 280 156 1230 280 156 186B B10 MOTORSPORT COMPONENTS Flow Qty*OperatingPart Numberg/min Pressure Resistance Design @ 3 Bar(Bar)(ohms)TypeConnectorCommentsFUEL INJECTOR TECHNICAL > 812EV69 122 067 011 Standard body25 spray > 812EV69 122 067 011 Standard body70 spray > 812EV69 122 067 011 Standard body25 spray > 812EV69 122 067 011 Standard body70 spray angleB 280 431 128B 280 431 129B 280 431 130B 280 431 131 Revision 1 - December 2003 01 Jun.

10 05 Motorsport 1/2 injection Valve EV 6 The development of the EV 6 took intoaccount all the essential functional re-quirements which originate from injectoroperation in multipoint electronic fuelinjection systems (EFI). This resulted in: low weight, dry solenoidwinding, plastic encapsulation, finelymatched flow-rate classes, good valve-seat sealing, excellent hot-start capabili-ties, close tolerances of the specifiedfunctional values, high level of corrosionresistance and long service life. Mechanical data System pressure max. 8 barWeight 45, 8 g Electrical data Solenoid resistance 12 Max. power supply 16 V Conditions for use fuel input axial (top-feed)Operating temperature -40.