Subaru recently
reached a milestone with its 15-millionth boxer engine, marking 49 years of the
company's ingenuity. To celebrate this achievement, here's a discussion about
the boxer engine and the reasons for its well-deserved accolades.
To understand the boxer
engine, it's important to fathom one of the recurring problems of the
combustion engine: vibration. Anything that produces an explosion is followed
by an explosive force; in this case, the force from the combustion chamber.
This is normal for today's engines, but they pose some problems.
To put it bluntly,
the force can knock some engine parts loose, resulting in serious safety
issues. Pistons installed in an inline or V-type configuration expend the
explosive force to nothingness, causing the vibrations. Engineers are forced to
install special components to address the issue but at the expense of increased
maintenance.
Somehow, the
resulting force has to go somewhere, at least to counteract another force.
That's where Subaru got the idea for its boxer engine. By positioning the
pistons horizontally, forces produced by the combustion slam into each other
and cancel out. It won't eliminate vibrations, but less vibrations means longer
life for the engine.
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