NOVELTY - A control system (14) for the engine (12) of an automotive vehicle (10) having two fuel injectors for injecting two fuel types, respectively, into an engine cylinder, comprises a first controller including a first driver generating a first signal indicative of desired fueling amount for one of the fuel types, respectively; and a second controller receiving the first signal and including second and third drivers for controlling the fuel injectors, respectively.    USE - Used for a bi-fuel engine of automotive vehicle having two fuel injectors for injecting two fuel types, respectively, into an engine cylinder (claimed).    ADVANTAGE - The control system provides a powertrain controller that generates control signals for either gasoline or alternate fuel (AF) injectors (40), depending on which fuel type is desired to be combusted. Thus, a common control strategy can be utilized in a single controller to control both gasoline and AF fuel injection to meet regulated emission requirements and to improve fuel economy.    DETAILED DESCRIPTION - A control system for a bi-fuel engine having two fuel injectors for injecting two fuel types, respectively, into an engine cylinder, comprises a first controller including a first driver generating a first signal indicative of a desired fueling amount for one of the fuel types, respectively; and a second controller receiving the first signal and including second and third drivers for controlling the fuel injectors, respectively. The second driver generates a second signal for controlling an amount of the first fuel type based on the first signal.    INDEPENDENT CLAIMS are also included for the following:    (a) a fuel injector controller for controlling two fuel injectors of an engine, comprising a first driver to generate a first signal for controlling the first fuel injector based on a received signal indicative of a desired fueling amount when the first driver is energized; a second driver to generate a second signal for controlling the second fuel injector based on the received signal when the second driver is energized; and a microprocessor to selectively energize one of the drivers; and    (b) controlling an engine capable of combusting two fuel types.    DESCRIPTION OF DRAWING(S) - The figure is a schematic view of a bi-fuel engine having a control system.    Automotive vehicle (10)    Engine (12)    Control system (14)    Combustion chamber (16)    Crankshaft (22)    Exhaust manifold (28)    AF fuel injector (40)    Switch (70)