evenly distributed on both sides of the piston of the engine crankshaft, the left and right movement in the horizontal direction. Can reduce the overall height of the engine, to shorten the length, the center of gravity of the vehicle decreases, the vehicle is running more smoothly, reducing vibration of the vehicle during traveling.
1. Boxer engine characteristics
low center of gravity lateral vibration generated is easily absorbed holder, will effectively reduce the engine center of gravity of the entire vehicle heavier, easier to achieve overall balance.
balancing good vibration damping piston (offset about 180 degrees).
compared to the in-line, the balance weight reduction factor required in terms of the crankshaft, to help improve the speed.
It can maintain a low speed of 650 rpm, and to ensure a smooth engine operation.
Also, compared to other engine minimum fuel consumption line.
2. Disadvantages boxer engine
Maximum advantages as boxer engine is a low center of gravity, automobile driving stability enhancement.
Meanwhile, horizontally opposed cylinders symmetrical layout is a stable structure, which makes the smooth operation of the engine better than V-type engine, the power loss is minimal runtime.
level of disadvantage opposed complicated structure, so that the lubricating oil is difficult to solve.
transversely of the cylinder because of gravity, the oil will flow to the bottom of the side of the cylinder are not sufficient lubrication.
Meanwhile, since the piston placed horizontally and the effect of its own weight, the degree of friction and its horizontal top and from the bottom of the operation is not the same liner, which would make the inner surface of the upper and lower two different cylinder liner wear occurs, bottom to wear out a little more.
Another point is that, horizontally opposed lateral vibration can be canceled, only an ideal condition, because if the carbon and other causes not fully closed valve, will cause unequal pressure cylinder, which will cause a lateral force is not and so on, in which case it will also cause about jitter.