Abstract: The present invention relates to fuel systems for diesel engines. In particular, the invention relates to a dual fuel supply system (10) for a diesel engine having an indirect-injection system (12). The invention extends to a diesel engine incorporating the dual fuel supply system (10) and to a vehicle that incorporates a diesel engine having the dual fuel supply system (10). The dual-fuel supply system (10) includes a mixed fuel supply system (17) that includes a first stage (14) having a diesel tank (42) and LPG tank (44), and as second stage (16) to supply the fuel mixture to the injection system (12). The dual-fuel supply system (10) also includes diesel supply system (80) for delivering diesel to the injection system (12). Moreover, the dual fuel system (10) is configured to permit selective change over between the diesel supply system (80) and the mixed fuel system (17) to supply the injection system (12) selectively with either diesel or liquid fuel mixture respectively.

Abstract: The present invention is directed to a dual fuel supply system for supplying fuel to a direct-injection system of a diesel engine. The dual fuel supply system includes a diesel supply system to supply diesel to the direct-injection system; and a mixed fuel supply system that is operatively able to supply a liquid fuel premixture of diesel and liquefied gaseous fuel to the direct-injection system at a supply pressure within a fuel demand pressure range of the direct-injection system and at a corresponding temperature range that retains the fuel premixture below its vapor temperature as it flows through the fuel path of the direct-injection system and the diesel engine. The dual fuel supply system is configured to permit selective change over between the diesel supply system and the mixed fuel system to supply the direct-injection system selectively with either diesel or liquid fuel premixture respectively.

Abstract: A solenoid valve has a main stage and a pilot stage, wherein the main stage includes a switching element which in the closed condition of the solenoid valve closes a main flow path from a high-pressure side to a low-pressure side and in the open condition of the solenoid valve clears the main flow path. In its closed condition, the pilot stage closes a pilot flow path from the high-pressure side to the low-pressure side and in its open condition clears the pilot flow path. The pilot flow path leads through a control chamber which is in permanent flow connection with the high-pressure side via a control opening. The pressure existing in the control chamber acts on the switching element. The pilot stage includes a coil and a pilot valve element movable by a magnetic field of the coil, which are arranged at the switching element and are moved with the same.

Abstract: The present invention is directed to a dual fuel supply system for supplying fuel to a direct-injection system of a diesel engine. The dual fuel supply system includes a diesel supply system to supply diesel to the direct-injection system; and a mixed fuel supply system that is operatively able to supply a liquid fuel premixture of diesel and liquefied gaseous fuel to the direct-injection system at a supply pressure within a fuel demand pressure range of the direct-injection system and at a corresponding temperature range that retains the fuel premixture below its vapor temperature as it flows through the fuel path of the direct-injection system and the diesel engine. The dual fuel supply system is configured to permit selective change over between the diesel supply system and the mixed fuel system to supply the direct-injection system selectively with either diesel or liquid fuel premixture respectively.

Abstract: The present invention relates to fuel systems for diesel engines. In particular, the invention relates to a dual fuel supply system (10) for a diesel engine having an indirect-injection system (12). The invention extends to a diesel engine incorporating the dual fuel supply system (10) and to a vehicle that incorporates a diesel engine having the dual fuel supply system (10). The dual-fuel supply system (10) includes a mixed fuel supply system (17) that includes a first stage (14) having a diesel tank (42) and LPG tank (44), and as second stage (16) to supply the fuel mixture to the injection system (12). The dual-fuel supply system (10) also includes diesel supply system (80) for delivering diesel to the injection system (12). Moreover, the dual fuel system (10) is configured to permit selective change over between the diesel supply system (80) and the mixed fuel system (17) to supply the injection system (12) selectively with either diesel or liquid fuel mixture respectively.