939011754 - E5030 PETROL ENGINE ELECTRONIC MANAGEMENT - DESCRIPTION
DESCRIPTION
The JTS engine features a fuel supply system with a high pressure pump for direct injection.An electronic control system supervises and governs all engine parameters to optimise performance and fuel consumption by means of a real-time response to different service conditions.The system is managed by a BOSCH MED7.6.1 control unit with a motorized throttle that controls both the ignition and the phased, sequential injection.Depending on the signals received from numerous sensors, the control unit controls the injectors connected to it managing the following systems:- fuel supply;- high pressure fuel pump control;- air supply;- accelerator pedal- engine cooling;- exhaust with catalytic converters controlled by four Lambda sensors;- fuel vapour recirculation.The control unit of this JTS engine manages the operation of th high pressure fuel pump by controlling an electric pressure regulator and an associated pressure sensor.The throttle body is also controlled electronically by the control unit: the throttle opening is calculated according to a specific logic inside the engine management control unit; the mechanical connection between the accelerator pedal and the throttle body is thereby eliminated.The control unit controls the engine timing by means of a pair of electrohydraulic phase transformers - one on the inlet shaft and one on the exhaust shaft - ; this solution makes it possible to ensure optimum timing managing the inlet and the exhaust separately; two timing sensors allows the continuous control of the solution set.Thanks to the electronic management described above, this engine conforms to the most recent pollution control standards (EURO 4).For more details See descriptions 1056 PETROL INJECTION SYSTEM The system is also controlled by dedicated relays in the engine compartment junction unit. Lines supplying the control unit and various system components (sensors and actuators) are protected by dedicated fuses that are also located inside the engine compartment junction unit.