PDF《Bosch spark plugs:》

Bosch spark plugs: The correct fit for every engine AA/XXX

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64.XX This is where you get original Bosch quality: For further information visit: www.bosch.com Moving motorcycles: Spark plugs from Bosch Wherever mobility and engine power are required, Bosch spark plugs give gasoline engines a boost: f f Cars f f Commercial vehicles f f Motorcycles f f Boats/ships f f Power saws f f Gardening implements For full information see the main spark plug catalog or visit www.bosch.com. Order no.

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720 034 Bosch spark plugs for motorcycles and scooters: Reliable and guaranteed quality The demands of engine performance, quality and reliability for bikes are constantly increasing. These demand parameters influence the design and functionality of spark plugs. This is why Bosch has redefined their portfolio of motorcycle spark plugs, with a broader program range. The program is specifically tailored to the requirements of top sports bikes and scooters. Continuous development, with over

100 years of experience in making spark plugs and the expertise provided by a system manu- facturer ensure that Bosch spark plugs are constantly up to date with the latest technology and engine design. The compact power package: High expectations meet high performance Nickel-plated housing and thread: Protection against corrosion and seizure in the aluminum cylinder head Effective current leakage barriers at the insulator: Prevent flashover and thus misfiring Interference suppression resistor: Reliable operation of all electronic systems Heat-shrink assembly: For absolute gas-tightness and a precise heat range Ground electrode: Wear-resistant and long service life Center electrode with copper core: High thermal conductivity, protection against thermal overload Spark plugs are vitally important in determining the optimum performance and safe function of the engine. Spark plugs from Bosch are specially adapted to the specific requirements of two wheeler engines. The outstanding features of Bosch spark plugs include: Especially in motorcycle engines, with their high engine speeds, spark plugs must withstand special strains. Motorcycle spark plugs from Bosch: f f Demonstrate a high insulating capacity even at tem- peratures of over 1,000°?C f f Are resistant to pressure of up to around

100 bar in the combustion chamber f f Have a high mechanical strength for safer installation f f Are resistant to chemical processes in the combustion chamber and to damaging residues f f Can withstand the thermal shocks resulting from the exchange of hot exhaust fumes and cold intake mixture f f Guarantee an efficient heat dissipation from the insu- lator and the electrodes f f Extremely smooth operation f f Dependable performance over the entire service life f f Reliable cold starting f f Complete combustion and thus low fuel consumption f f Wide range with the appropriate applications for several brands and engine types f f Factory-set electrode gap to suit every engine f f Quick and easy replacement, spark plug seizure is a thing of the past Safe, clear, practical: Motorcycle spark plugs from Bosch are provided in singles and in packs of ten. The fast mover types are also available in blister packaging. At a glance: Cross reference of the best sellers Test first, then approve The correct spark plug is key for the performance, service life and efficiency of a motorcycle engine. Which is why, before a Bosch spark plug is approved for use in a par- ticular engine, extensive testing is carried out to determine which spark plug best suits which engine. Critical aspects here are the temperature and ionic current measurement, which determines the spark plug with the optimum heat range for this engine. Redefining performance limits: Endurance testing for Bosch motorcycle spark plugs Individually matched: The right heat range for every engine The heat range number indicates the thermal capacity of a spark plug. The higher the heat range number of a spark plug, the higher its resistance to contamination and the lower its resistance to auto-ignition. The appro- priate heat range number is determined by extensive application measurements using the ionic current measurement process. The correct heat range is important on one hand to achieve the minimum temperature (self-cleaning temperature) and thus avoid "carbon fouling" (danger of misfiring). On the other hand a specific maximum temperature may not be exceeded, so as to avoid auto- ignition (ignition prior to its timed ignition by a spark from the spark plug). Low numbers (e.g.