Hi. I`d like to know how do Twin spark and i-DSI work?
I know that
- Alfa-engines have 4 valves and 2 plugs (twin spark)
- Mercedes-engines and Porsche-engines have 3 valves and 2 plugs
- new Honda-engines - i-DSI- have 4 valves and 2 plugs (the plugs works sequentially (why not synchronously??)
And i`d like to know how Alfa, Mercedes and Porsche engines works? Sequentially or Synchronously? I think there are many clever guys with technical education here. May someone knows..
P.S. And does everybody know what Honda-motor work synchronously for? What does it give?
Thanks.