| Motorcycle engine design and innovation
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| | valves per jug was found to be the right
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| has long surpassed that of the automotive
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| | combination. This design gives the engine
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| industry, and industry observers agree
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| | extra intake valve perimeter, which
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| that the big companies like Yamaha, Honda
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| | allows it to flow more air at
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| and Suzuki can muster considerable R&D
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| | low-to-medium valve lifts -- exactly
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| prowess here, which can then be applied
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| | where valves in most production
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| to their automobile engines.Competitors
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| | automotive engines spend most of their
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| are especially aware of this. Says former
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| | operating time.Honda of America Mfg.,
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| Oldsmobile chief engineer Ted Louckes:
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| | Inc., has combined plant and production
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| "That's where the leading edge of piston
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| | engineering with advanced manufacturing
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| engine technology is today. It's not in
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| | techniques to become one of the leading
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| automobiles; it's not in aircraft. It's
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| | engine producers in North America.The
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| in motorcycles."The Goal: Better
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| | million-square-foot plant manufactures
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| CombustionWhen considering the advantages
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| | 500,000 high technology engines and drive
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| of a combustion chamber crammed with more
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| | trains a year. Kinzer noted that the
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| than four valves-per-cylinder, the first
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| | plant produces everything that makes a
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| inclination is to think, aha! Flow area!
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| | car "go and stop." He said that even
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| Five valves equals more flow area! True,
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| | Japan has no Honda facility comparable to
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| to a degree, but that's only part of the
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| | the Anna plant. Its production, he
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| Yamaha's design strength.In the reigning
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| | reported, equals the total of seven
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| days of the two-valvers, engine designers
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| | similar Honda manufacturing units in
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| would control pinging by incorporating
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| | Japan. At present production levels, a
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| squish bands into the combustion
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| | Civic or Accord engine is produced at the
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| chambers. By the 1960s, the four-valve
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| | Anna plant every 27 seconds.Honda's iron
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| heads of Cosworth and Honda racing
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| | foundry operates three shifts per day.
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| engines were allowing narrow included
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| | The ferrous casting and machining
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| valve angles and thus shallow combustion
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| | operations include the production of
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| chambers. Put the spark plug in the
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| | engine cylinder sleeves and brake discs
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| center, and voila!, good
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| | and drums. Aluminum casting operations
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| combustion.Yamaha looked beyond four
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| | include high pressure casting of engine
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| valves to unlock even better combustion.
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| | blocks and transmission and torque
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| In the early '80s (Yamaha had only been a
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| | converter cases, low pressure casting of
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| serious producer of four-stroke engines
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| | engine cylinder heads and gravity casting
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| for about ten years!) it experimented
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| | of pistons.Joe loves his motorcycle but
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| with a variety of head and valve
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| | he knows how to drive it safely. Learn
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| configurations, even trying a
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| | more at his blog here: Motorcycle
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| seven-valve-per-cylinder (four intakes,
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| | Batteries and More.
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| three exhaust) design.Finally, five
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