Model   NO. Basic fuel system Bi-fuel(LPG/CNG) Control system Remarks Fuels Alternation Fuel System Fuel Control Spark Timing Control Fuel Selection  1 Carburetor Manual Carburetor Open loop 3-phase    2 Carburetor Manual Carburetor Open loop Commutator    3 Carburetor Auto Carburetor Open loop 2-phase    4 Carburetor Auto Carburetor Open loop Auto Commutator    5 Carburetor Auto Carburetor Close loop Commutator    6 Carburetor Auto Carburetor Close loop Auto Commutator    7 Injection Auto Carburetor Open loop 2-phase    8 Injection Auto Carburetor Open loop Commutator    9 Injection Auto Carburetor Open loop Auto 2-phase   10 Injection Auto Carburetor Close loop 2-phase   11 Injection Auto Carburetor Close loop Commutator 12 Injection Auto Carburetor Close loop Auto Commutator 13 Injection Auto Injection Close loop 2-phase under Developing 14 Injection Auto Injection Close loop Auto Commutator under Developing 15 Injection Auto Injection Close loop Auto Commutator under Developing     ▶ Manual fuels alternation ▶ Displayed each fuel metering in 1-fuel meter(At dirver room site) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Manual fuels alternation ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Displayed each fuel metering in fuel meter(At driver room site) ▶ Emergency LPG fuel cut_off ▶ Simple fuel selection by 2 phase change-over switch --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Automatic spark timing alternation(for High Engine power & fuel economy) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Stoichmetric Air-fuel ratio(入) control in LPG mode    (for high engine performance & Low exhaust emission) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Stoichmetric Air-fuel ratio(入) control in LPG mode    (for high engine performance & Low exhaust emission) ▶ Automatic Spark timing alternation(for High Engine power & fuel economy) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Displayed each fuel metering in fuel meter(At driver room site) ▶ Simple fuel selection by 2 phase change-over switch ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Automatic Spark timing alternation(for High Engine power & fuel economy) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Stoichmetric Air-fuel ratio(入) control in LPG mode    (for high engine performance & Low exhaust emission) ▶ Displayed each fuel metering in fuel meter(At driver room site) ▶ Simple fuel selection by 2 phase change-over switch ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Stoichmetric Air-fuel ratio(入) control in LPG mode    (for high engine performance & Low exhaust emission) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Stoichmetric Air-fuel ratio(入) control in LPG mode    (for high engine performance & Low exhaust emission) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Automatic Spark timing alternation(for High Engine power & fuel economy) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Higher engine performance & Lower exhaust emission ▶ Displayed each fuel metering in fuel meter(At driver room site) ▶ Simple fuel selection by 2 phase change-over switch ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Similon engine performance to petrol engine ▶ Automatic Spark timing alternation(for High Engine power & fuel economy) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------   ▶ Automatic fuels alternation ▶ Almost same engine performance to petrol engine ▶ Automatic Spark timing alternation(for High Engine power & fuel economy) ▶ Seasonal(winter/summer) spark timing selection mode(For higher engine performance) ▶ Additional LPG fuel metering display by commutator    (Available to display 2 fuels metering in dirver room simultaneously) ▶ Emergency LPG fuel cut_off --------------------------------------------------------------------------------------------