초록 ▼

A fuel injection system with controlled injectors for diesel engines includes a system for regulating the temperature of the fuel, including thermostatically-controlled preheating means associated with the fuel supply circuit and electronically-controlled cooling means associated with the fuel recyc

A fuel injection system with controlled injectors for diesel engines includes a system for regulating the temperature of the fuel, including thermostatically-controlled preheating means associated with the fuel supply circuit and electronically-controlled cooling means associated with the fuel recycling circuit.

대표청구항 ▼

A fuel injection system with controlled injectors for diesel engines, comprising a fuel tank, a supply circuit including a pump for conveying the fuel under pressure from the tank to the controlled injectors, and a circuit for recycling the fuel to the tank, including a return line from the pump in

A fuel injection system with controlled injectors for diesel engines, comprising a fuel tank, a supply circuit including a pump for conveying the fuel under pressure from the tank to the controlled injectors, and a circuit for recycling the fuel to the tank, including a return line from the pump in which a solenoid pressure regulating valve is inserted, and a return line from the injectors which is joined by the return line from the pump, including a system for regulating the temperature of the fuel, including: preheating means including a branch line (12) which connects the return line (9) from the pump (4) downstream of the solenoid pressure-regulating valve (10, ii) with the supply circuit (5a) upstream of the pump and a cut-off valve (13) having a thermostatic control (14) and arranged to allow the fuel to flow through the branch line (12) when the temperature of the fuel upstream of the pump (4) is below a predetermined threshold value and to stop this flow when the temperature exceeds the threshold value, and cooling means including means (24) for sensing the temperature of the fuel in the supply circuit (5b) downstream of the pump (4) and upstream of the return line (9) from the pump (4), electrically-controlled cooling means (17, 18; 20, 21, 22, 23) associated with the return line (15) from the injectors (2) downstream of the return line (9) of the pump (4), and an electronic unit (S) for controlling the cooling means in response to signals provided by the temperature sensor means (24).