摘要:
The invention concerns a fuel system (4) that comprises a first fuel tank (20) and a second fuel tank (22). The fuel is conducted from the first fuel tank (20) to a high-pressure system (19). A main feed pump (26) feeds fuel from the first fuel tank (20) via a second line (40) and a transfer pump (28) feeds fuel from the second fuel tank (22) to the first fuel tank (20) via the first fuel line (36). A first electric motor (M1) drives the main feed pump (26), and is arranged in the first fuel tank (20). The first fuel tank (20) holds a smaller volume than the second fuel tank (22). A fuel return line (13) is arranged so as to return pressurized fuel from the high-pressure system (19) to the first fuel tank (20). The fuel system (4) further comprises an arrangement for controlling the fuel temperature in the first fuel tank (20) by controlling the flow of fuel to the first fuel tank (20). The invention also concerns a combustion engine (20) and a vehicle (1) that contains the system, and a method for controlling a fuel system (4).
摘要:
A method and a system for control of a low-pressure circuit in a fuel system of a vehicle, which circuit is arranged to provide the vehicle's engine with fuel from at least one fuel tank via a pressure change system. The system includes a determination unit to make a determination of a future working point for the engine. The determination unit bases this determination on information about a section of road ahead. The system also has a pump operating unit which operates at least one controllable fuel pump which is part of the low-pressure circuit. The pump operating unit bases this operation on the future working point.
摘要:
The present invention proposes a method and a system for control of a low-pressure circuit in a fuel system, of a vehicle, which circuit is arranged to provide the vehicle' s engine with fuel from at least one fuel tank via a pressure change system. The system according to the present invention comprises a determination unit adapted to making a determination of a future working point for the engine. The determination unit is adapted to basing this determination on information about a section of road ahead. The system comprises also a pump operating- unit adapted to operating at least one controllable fuel pump which is part of the low- pressure circuit. The pump operating unit is adapted to basing this operation on the future working point.
摘要:
A fuel system (4) for a combustion engine (2) comprises a first fuel tank (20), a second fuel tank (22), a first fuel pipe (36) arranged in connection with the first fuel tank (20) and the second fuel tank (22), a second fuel pipe (40) arranged in connection with the first fuel tank (20), a main feed pump (26), and a transfer pump (28). The main feed pump (26) feeds fuel from the first fuel tank (20) through the second fuel pipe (40), and the transfer pump (28) feeds fuel from the second fuel tank (22) to the first fuel tank (20) via the first fuel pipe (36). A valve (32) is arranged downstream of the transfer pump (28). The valve (32) comprises an inlet connected with the transfer pump (28), a first outlet connected with the first fuel pipe (36) and a second outlet connected with the second fuel pipe (40). The fuel system reduces the risk of insufficient or loss of fuel supply to the combustion engine in the event of an operational disruption, and enables a method for continued operation, albeit with potentially reduced power. This also secures the operation of the combustion engine (2) and a vehicle equipped with such a fuel system.
摘要:
A fuel system (4) for a combustion engine (2) comprises a first fuel tank (20), a second fuel tank (22), a first fuel pipe (36) arranged in connection with the first fuel tank (20) and the second fuel tank (22), a second fuel pipe (40) arranged in connection with the first fuel tank (20), a main feed pump (26), and a trans¬ fer pump (28). The main feed pump (26) is arranged to feed fuel from the first fuel tank (20) through the second fuel pipe (40) and the transfer pump (28) is arranged to feed fuel from the second fuel tank (22) to the first fuel tank (20) via the first fuel pipe (36). A first electric engine (M1 ) is arranged to drive the transfer pump (28) and a second electric engine (M2) is arranged to drive the main feed pump (26). A pre-filter (30) is arranged downstream of the transfer pump (28), so that the transfer pump (28) feeds pressurised fuel through the pre-filter (30). The fuel system also enables a method to control a fuel system (4) with good filtration of the fuel, and which reduces the risk of operational disruptions in a combustion engine (2) and a motor vehicle.
摘要:
A fuel system for an internal combustion engine is provided, which comprises a first fuel tank, a fuel filter device, arranged between a low pressure pump operated by an electric motor and a high pressure pump, a first fuel conduit, through which the low pressure pump is arranged to supply fuel to the fuel filter device, and a control device, arranged in connection with an electric motor operating the low pressure pump. An overflow conduit is arranged in connection with a deaeration outlet, arranged in the fuel filter device and the first fuel tank, and the control device is arranged to control the electric motor, in such a way that the low pressure pump is active when the internal combustion engine is turned off for a limited period, whereby fuel may flow from the fuel filter device via the deaeration outlet and the overflow conduit, back to the first fuel tank.
摘要:
A fuel system (4) for a combustion engine (2) comprises a first fuel tank (20), a second fuel tank (22), a first fuel pipe (36) arranged in connection with the first fuel tank (20) and the second fuel tank (22), a second fuel pipe (40) arranged in connection with the first fuel tank (20), a main feed pump (26), and a transfer pump (28). The main feed pump (26) feeds fuel from the first fuel tank (20) through the second fuel pipe (40), and the transfer pump (28) feeds fuel from the second fuel tank (22) to the first fuel tank (20) via the first fuel pipe (36). A valve (32) is arranged downstream of the transfer pump (28). The valve (32) comprises an inlet connected with the transfer pump (28), a first outlet connected with the first fuel pipe (36) and a second outlet connected with the second fuel pipe (40). The fuel system reduces the risk of insufficient or loss of fuel supply to the combustion engine in the event of an operational disruption, and enables a method for continued operation, albeit with potentially reduced power. This also secures the operation of the combustion engine (2) and a vehicle equipped with such a fuel system.
摘要:
A method is provided for estimating a range for a vehicle, where the vehicle includes a combustion engine and a fuel supply system associated with the combustion engine. Vehicle also includes a first main tank for receiving fuel, and a first fuel pump for transfer of fuel from the first main tank to the fuel supply system. The method estimates a range for the vehicle based on data relating to the road ahead of the vehicle and a first measure of residual fuel in the first main tank. The method further controls a required fuel reserve based on the data relating to the road ahead of the vehicle.