How does the Mazda Skyactiv-G exhaust system work?
However, with a long 4-2-1 exhaust system, since it takes time for the high pressure wave to reach the next cylinder, the effect mentioned is limited to extra-low engine speeds, making the reduction of residual gas at almost all engine speeds possible.
What’s the compression ratio of the Mazda Skyactiv G?
A new-generation highly-efficient direct-injection gasoline engine that achieves the world’s highest gasoline engine compression ratio of 14.0:1. Features of SKYACTIV-G. ・The world’s first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1.
Why is a piston cavity used in Mazda Skyactiv?
Specifically, aside from creating a more homogeneous mixture by means of intensifying air flow, increasing injection pressure, and using multi-hole injectors to enhance fuel spray characteristics, a piston cavity is used to prevent the initial combustion flame from hitting the piston and interfering with the flame’s growth.
What causes knocking noise in Mazda Skyactiv G?
Knocking is abnormal combustion in which the air-fuel mixture ignites prematurely due to exposure to high temperature and pressure, creating an unwanted high-frequency noise. When the compression ratio is increased, the temperature at compression top dead center (TDC) also rises, increasing the probability of knocking.
However, with a long 4-2-1 exhaust system, since it takes time for the high pressure wave to reach the next cylinder, the effect mentioned is limited to extra-low engine speeds, making the reduction of residual gas at almost all engine speeds possible.
Is the EGR valve on a Mazda covered under warranty?
Had to have diagnosis done due to engine light repeatedly coming on. Turned out to be EGR valve replacement. Disappointed to learn not covered under warranty. Anyone with similiar experience or comment on this? “..not covered under warranty..” Not bloody likely…
Specifically, aside from creating a more homogeneous mixture by means of intensifying air flow, increasing injection pressure, and using multi-hole injectors to enhance fuel spray characteristics, a piston cavity is used to prevent the initial combustion flame from hitting the piston and interfering with the flame’s growth.
A new-generation highly-efficient direct-injection gasoline engine that achieves the world’s highest gasoline engine compression ratio of 14.0:1. Features of SKYACTIV-G. ・The world’s first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1.