device to control the elektroeinspritzventile and elektroventile a brennkraftmaschine and a method

摘要

In a single device (1) for controlling electro-injectors (3) and electrovalves (5) in an internal-combustion engine, a first control circuit (2) for each electro-injector (3), a second control circuit (4) for each electrovalve (5), and a timing circuit (9), supplying timing signals to the first and second control circuits (2, 4). In the second control circuit (4), switches (38, 39, 43, 45) selectively connect the respective electrovalve (5) to a first voltage source (8) in certain given operating conditions, and to a boosted voltage source (11), constituted by a capacitor (12) for accumulation of energy, in certain other given operating conditions. In this way, part of the electrical energy accumulated in the electrovalve (5) during its normal actuation is transferred to the capacitor (12), thus causing the latter to be recharged.