In Indonesia, which has the Mazda SKYACTIV technology uses compression ratio of the engine reaches 1:13. Compression is fairly high that provides great torque and fuel efficiency.
With the compression of it, the risk of knocking (tickle) can often occur. But Mazda has anticipated this by changing the specifications of the machine.
Do not stop there, as a whole, the other components involved overhauled to provide maximum performance. One of them is the exhaust system or exhaust.
Previously, Mazda used a 4-1 formation for the exhaust system. While the SKYACTIV technology has now brought the 4-2-1 formation. That is, the drain of the four cylinders are divided into two groups. Then both groups were put together with a fairly long distance.
This formation is intended to prevent a reversal of the exhaust gas into the combustion chamber. The flue gas is turned too strong it can withstand exhaust gas in the cylinder other out. So that the temperature of the combustion chamber retains heat and causes the fuel burn prematurely.
"As an illustration like this, in a 4-1 formation, neck sewer between the cylinder adjacent to each other. Therefore, the outgoing flue gases could enter into another cylinder. This causes the combustion chamber is difficult to cool more quickly. While the 4-2 formation -1, because leber longer inter-cylinder, exhaust gas that bounced into the other combustion chamber is not strong enough, "said Trainer Mazda Motor Indonesia, Ari Tristianto Wibowo.
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