S⁣2⁣p⁣o⁣N⁣n⁣ ⁣s⁣R⁣o⁣O⁣r⁣ ⁣B⁣W⁣ ⁣A⁣e⁣C⁣ ⁣I⁣d⁣⁣⁣Y⁣ ⁣⁣D⁣A immediate injection procedure which integrated a large-force gasoline pump, gas shipping pipe and gas injector assembly; and, A port injection process whic