Fuel supply system of methanol hybrid tractor

Abstract

The utility model relates to a fuel supply system of a methanol hybrid tractor, which solves the problem that methanol cannot be started due to paraffin precipitation. Comprising a main methanol tank (1), a methanol coarse filter (2), a methanol liquid level sensor (3), a main methanol tank methanol evaporator (6), a main methanol tank evaporation pipe (7), a methanol pump (9), a gasoline liquid level sensor (10), a gasoline pump (13), a gasoline filter (15), a carbon tank I (19), a carbon tank II (20), a gasoline pressure regulating valve (23), a methanol fine filter (25), a methanol pressure regulating valve (27), a three-way joint I (30), an oil drainage electromagnetic valve device (32), a three-way joint II (34) and a main and auxiliary methanol tank serial methanol pipe (35), and the auxiliary methanol tank (36) and the auxiliary methanol tank methanol evaporator (37) form a methanol supply system part, a gasoline supply system part and a methanol evaporation system part. The engine is large in volume and compact and reliable in structure, and meanwhile, low-temperature cold start fuel supply is provided, and the driving range is increased.

Description

Technical Field

[0001] The utility model relates to a fuel supply system, in particular to a fuel supply system for a methanol hybrid tractor. Background Art

[0002] Currently, heavy-duty trucks primarily use traditional fuels, including diesel, LNG, and CNG. New energy fuels, such as fuel cells, hybrids, and hydrogen, are rarely used. Methanol-fueled tractors are a truly green, recyclable, and renewable clean energy source, offering efficient combustion and clean emissions. However, methanol fuel has a high consumption rate, is volatile, and tends to wax in cold winter regions. To meet the demands of large-tonnage, long-distance transport, a larger volume of methanol is required to increase driving range while also ensuring low-temperature cold-start capability. Utility Model Content

[0003] The purpose of the utility model is to provide a methanol hybrid tractor fuel supply system, which adopts a series methanol supply system and a double-cavity tank body with an integrated design of a methanol tank and a gasoline tank. Under the condition of limited vehicle layout space, the volume of the methanol tank is greatly increased. At the same time, in cold areas in winter, gasoline is used alone to supply the methanol engine for low-temperature cold start, avoiding the problem of methanol waxing and being unable to start.

[0004] The utility model is realized by the following technical solutions:

[0005] A methanol hybrid tractor fuel supply system includes a main methanol tank 1, a methanol coarse filter 2, a methanol level sensor 3, a main methanol tank methanol return pipe 4, a main methanol tank methanol inlet pipe 5, a main methanol tank methanol evaporator 6, a main methanol tank evaporation pipe 7, a methanol coarse filter to methanol pump methanol pipe 8, a methanol pump 9, a gasoline level sensor 10, a methanol pipe from the methanol pump to the methanol pressure regulating valve 11, a gasoline tank oil inlet pipe 12, a gasoline pump 13, a gasoline pipe from the gasoline pump to the gasoline filter 14, a gasoline filter 15, a gasoline pipe from the gasoline filter to the gasoline pressure regulating valve 16, a gasoline pipe from the gasoline pressure regulating valve to the gasoline tank return pipe 17, a gasoline pipe from the gasoline pressure regulating valve to the engine 18, a carbon canister 19, a carbon canister 20, a methanol evaporation pipe from the carbon canister to the engine carbon canister solenoid valve 21, a three-way joint to the carbon canister methanol evaporation pipe 22, a gasoline canister 13, a gasoline canister 14, a gasoline canister 15, a gasoline pipe from the gasoline filter to the gasoline pressure regulating valve 16, a gasoline canister 17 ... engine 18, a gasoline canister 19, a carbon canister 20, a methanol evaporation pipe The oil pressure regulating valve 23, the methanol fine filter to the engine alcohol inlet pipe 24, the methanol fine filter 25, the methanol pressure regulating valve to the methanol fine filter methanol pipe 26, the methanol pressure regulating valve 27, the methanol fine filter to the oil drain battery valve alcohol return pipe 28, the methanol pressure regulating valve to the three-way joint alcohol return pipe 29, the three-way joint 1 30, the auxiliary methanol tank evaporation pipe 31, the oil drain solenoid valve 32, the three-way joint to the oil drain solenoid valve alcohol return pipe 33, the three-way joint 34, the main and auxiliary methanol tanks in series methanol pipe 35, the auxiliary methanol tank 36, the auxiliary methanol tank methanol evaporator 37, form the methanol supply system part, the gasoline supply system part and the methanol evaporation system part, wherein the main methanol tank 1 is a double-chamber box, the main chamber 101 is a methanol tank, the auxiliary chamber 102 is a gasoline tank, and the auxiliary methanol tank 36 is a single-chamber box;

[0006] Methanol supply system:

[0007] The methanol level sensor 3 is mounted on the upper plane of the main chamber 101 of the main methanol tank 1, one end of the main and auxiliary methanol tank series methanol pipe 35 is mounted on the lower plane of the main chamber 101 of the main methanol tank 1, and the other end is mounted on the lower plane of the auxiliary methanol tank 36; one end of the main methanol tank alcohol inlet pipe 5 is mounted on the alcohol outlet of the methanol level sensor 3, and the other end is mounted on the alcohol inlet of the methanol coarse filter 2, and the methanol coarse filter 2 is mounted on the side of the main chamber 101 of the main methanol tank 1; one end of the methanol pipe 8 from the methanol coarse filter to the methanol pump is mounted on the alcohol outlet of the methanol coarse filter 2, and the other end is mounted on the alcohol inlet of the methanol pump 9; one end of the methanol pipe 11 from the methanol pump to the methanol pressure regulating valve is mounted on the alcohol outlet of the methanol pump 9, and the other end is mounted on the alcohol inlet of the methanol pressure regulating valve 27; one end of the methanol pipe 26 from the methanol pressure regulating valve to the methanol fine filter is mounted on the alcohol outlet of the methanol pressure regulating valve 27, and the other end is mounted on the methanol pressure regulating valve 27. One end is mounted on the alcohol inlet of the methanol fine filter 25; one end of the methanol fine filter to the engine alcohol inlet pipe 24 is mounted on the alcohol outlet of the methanol fine filter 25, and the other end is mounted on the alcohol inlet of the engine body; one end of the methanol fine filter to the oil drain battery valve alcohol return pipe 28 is mounted on the alcohol return port on the upper plane of the methanol fine filter 25, and the other end is mounted on the alcohol inlet of the oil drain solenoid valve 32; one end of the three-way joint to the oil drain solenoid valve alcohol return pipe 33 is mounted on the alcohol outlet of the oil drain solenoid valve 32, and the other end is mounted on the lower port of the three-way joint 34; one end of the methanol pressure regulating valve to the three-way joint alcohol return pipe 29 is mounted on the lower end alcohol return port of the methanol pressure regulating valve 27, and the other end is mounted on the right port of the three-way joint 34; one end of the main methanol tank alcohol return pipe 4 is mounted on the alcohol return port of the methanol liquid level sensor 3, and the other end is mounted on the upper port of the three-way joint 34;

[0008] Gasoline supply system:

[0009] The gasoline level sensor 10 is mounted on the upper plane of the secondary chamber 102 of the main methanol tank 1. One end of the gasoline tank inlet pipe 12 is mounted on the oil outlet of the gasoline level sensor 10, and the other end is mounted on the oil inlet of the gasoline pump 13. One end of the gasoline pipe 14 from the gasoline pump to the gasoline filter is mounted on the oil outlet of the gasoline pump 13, and the other end is mounted on the oil inlet of the gasoline filter 15. One end of the gasoline pipe 16 from the gasoline filter to the gasoline pressure regulating valve is mounted on the oil outlet of the gasoline filter 15, and the other end is mounted on the oil inlet of the gasoline pressure regulating valve 23. One end of the gasoline pipe 18 from the gasoline pressure regulating valve to the engine is mounted on the oil outlet of the gasoline pressure regulating valve 23, and the other end is mounted on the oil inlet of the engine body. One end of the gasoline pressure regulating valve to the gasoline tank return pipe 17 is mounted on the oil return port at the lower end of the gasoline pressure regulating valve 23, and the other end is mounted on the oil return port of the gasoline level sensor 10.

[0010] Methanol evaporation system part:

[0011] The main methanol tank methanol evaporator 6 is installed on the upper plane of the main cavity 101 of the main methanol tank 1, and the auxiliary methanol tank methanol evaporator 37 is installed on the upper plane of the auxiliary methanol tank 37; one end of the main methanol tank evaporation pipe 7 is installed on the outlet of the main methanol tank methanol evaporator 6, and the other end is installed on the upper port of the three-way joint 30; one end of the auxiliary methanol tank evaporation pipe 31 is installed on the outlet of the auxiliary methanol tank methanol evaporator 37, and the other end is installed on the lower port of the three-way joint 30; one end of the three-way joint to the carbon canister methanol evaporation pipe 22 is installed on the right port of the three-way joint 30, and the two interfaces at the other end are respectively installed on the air inlet of carbon canister 19 and the air inlet of carbon canister 20; the two interfaces at one end of the carbon canister to the engine carbon canister solenoid valve methanol evaporation pipe 21 are respectively installed on the air outlet of carbon canister 19 and the air outlet of carbon canister 20, and the other end is installed on the air inlet of the carbon canister solenoid valve on the engine body.

[0012] This utility model utilizes a series-connected methanol supply system and a dual-chamber design integrating the methanol and gasoline tanks. This significantly increases the methanol tank capacity within limited vehicle space. Furthermore, in cold winter regions, the methanol engine can be powered solely by gasoline for cold-start applications, resolving the issue of waxing and subsequent engine failure. This system boasts a large capacity, compact and reliable structure, and provides a low-temperature cold-start fuel supply, ensuring vehicle reliability, saving transportation costs, and increasing driving range. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the layout diagram of the fuel supply system for a methanol hybrid tractor;

[0014] Figure 2 This is a partial connection diagram of the methanol supply system;

[0015] Figure 3 It is a partial connection diagram of the gasoline supply system;

[0016] Figure 4 This is a partial connection diagram of the methanol evaporation system. DETAILED DESCRIPTION

[0017] The fuel supply system of the methanol hybrid tractor of the present invention includes a main methanol tank 1 (including a main chamber 101 and a sub-chamber 102), a methanol coarse filter 2, a methanol level sensor 3, a main methanol tank methanol return pipe 4, a main methanol tank methanol inlet pipe 5, a main methanol tank methanol evaporator 6, a main methanol tank evaporation pipe 7, a methanol pipe from the methanol coarse filter to the methanol pump 8, a methanol pump 9, a gasoline level sensor 10, a methanol pipe from the methanol pump to the methanol pressure regulating valve 11, a gasoline tank oil inlet pipe 12, a gasoline pump 13, a gasoline pipe from the gasoline pump to the gasoline filter 14, a gasoline filter 15, a gasoline pipe from the gasoline filter to the gasoline pressure regulating valve 16, a gasoline pipe from the gasoline filter to the gasoline pressure regulating valve 17, a gasoline pipe from the gasoline pressure regulating valve to the gasoline tank return pipe 17, and a gasoline pipe from the gasoline pressure regulating valve to the engine 18. , carbon canister 19, carbon canister 20, carbon canister to engine carbon canister solenoid valve methanol evaporation pipe 21, tee joint to carbon canister methanol evaporation pipe 22, gasoline pressure regulating valve 23, methanol fine filter to engine methanol inlet pipe 24, methanol fine filter 25, methanol pressure regulating valve to methanol fine filter methanol pipe 26, methanol pressure regulating valve 27, methanol fine filter to oil drain battery valve methanol return pipe 28, methanol pressure regulating valve to tee joint methanol return pipe 29, tee joint 1 30, auxiliary methanol tank evaporation pipe 31, oil drain solenoid valve 32, tee joint to oil drain solenoid valve alcohol return pipe 33, tee joint 2 34, main and auxiliary methanol tank series methanol pipe 35, auxiliary methanol tank 36, auxiliary methanol tank methanol evaporator 37. The layout diagram of the methanol hybrid tractor fuel supply system includes the methanol supply system, gasoline supply system and methanol evaporation system, such as Figure 1 shown.

[0018] Partial connection diagram of methanol supply system, such as Figure 2As shown, the methanol supply system for the methanol hybrid tractor of the present invention comprises a dual-chamber main methanol tank 1, with the main chamber 101 serving as the methanol tank and the secondary methanol tank 36 serving as a single-chamber. A methanol level sensor 3 is mounted on the upper surface of the main chamber 101 of the main methanol tank 1. A methanol pipe 35 connecting the main and secondary methanol tanks in series is mounted on the lower surface of the main chamber 101 of the main methanol tank 1 at one end and on the lower surface of the secondary methanol tank 36 at the other end. The main methanol tank methanol inlet pipe 5 has one end mounted on the methanol outlet of the methanol level sensor 3 and the other end mounted on the methanol inlet of the methanol coarse filter 2, which is mounted on the side of the main chamber 101 of the main methanol tank 1. A methanol pipe 8 from the methanol coarse filter to the methanol pump has one end mounted on the methanol outlet of the methanol coarse filter 2 and the other end mounted on the methanol inlet of the methanol pump 9. A methanol pipe 11 from the methanol pump to the methanol pressure regulating valve has one end mounted on the methanol outlet of the methanol pump 9 and the other end mounted on the methanol inlet of the methanol pressure regulating valve 27. One end of the methanol pipe 26 from the methanol pressure regulating valve to the methanol fine filter is mounted on the methanol outlet of the methanol pressure regulating valve 27, and the other end is mounted on the methanol inlet of the methanol fine filter 25. One end of the methanol fine filter to the engine alcohol inlet pipe 24 is mounted on the methanol outlet of the methanol fine filter 25, and the other end is mounted on the alcohol inlet of the engine body. One end of the methanol return pipe 28 from the methanol fine filter to the oil drain battery valve is mounted on the upper surface of the methanol return pipe 25, and the other end is mounted on the alcohol inlet of the oil drain solenoid valve 32. One end of the return pipe 33 from the tee to the oil drain solenoid valve is mounted on the alcohol outlet of the oil drain solenoid valve 32, and the other end is mounted on the lower end of the tee 34. One end of the return pipe 29 from the methanol pressure regulating valve to the tee is mounted on the lower end of the return pipe 27, and the other end is mounted on the right end of the tee 34. One end of the main methanol tank return pipe 4 is installed on the return port of the methanol level sensor 3, and the other end is installed on the upper port of the second three-way connector 34.

[0019] Gasoline supply system partial connection diagram, such as Figure 3 As shown: The gasoline supply system of the methanol hybrid tractor of the present invention comprises a dual-chamber main methanol tank 1, with a secondary chamber 102 serving as the gasoline tank. A gasoline level sensor 10 is mounted on the upper surface of the secondary chamber 102 of the main methanol tank 1. One end of the gasoline tank inlet pipe 12 is mounted to the oil outlet of the gasoline level sensor 10, and the other end is mounted to the oil inlet of the gasoline pump 13. One end of the gasoline pipe 14, from the gasoline pump to the gasoline filter, is mounted to the oil outlet of the gasoline pump 13, and the other end is mounted to the oil inlet of the gasoline filter 15. One end of the gasoline pipe 16, from the gasoline filter to the gasoline pressure regulating valve, is mounted to the oil outlet of the gasoline filter 15, and the other end is mounted to the oil inlet of the gasoline pressure regulating valve 23. One end of the gasoline pipe 18, from the gasoline pressure regulating valve to the engine, is mounted to the oil outlet of the gasoline pressure regulating valve 23, and the other end is mounted to the oil inlet of the engine. One end of the gasoline pressure regulating valve to gasoline tank return pipe 17 is mounted on the return oil port at the lower end of the gasoline pressure regulating valve 23, and the other end is mounted on the return oil port of the gasoline level sensor 10.

[0020] Partial connection diagram of methanol evaporation system, such as Figure 4 As shown: The methanol evaporation system of the methanol hybrid tractor of the present invention includes the main methanol tank methanol evaporator 6 mounted on the upper surface of the main chamber 101 of the main methanol tank 1, and the auxiliary methanol tank methanol evaporator 37 mounted on the upper surface of the auxiliary methanol tank 37. One end of the main methanol tank evaporation pipe 7 is mounted on the outlet of the main methanol tank methanol evaporator 6, and the other end is mounted on the upper end of the three-way joint 30. One end of the auxiliary methanol tank evaporation pipe 31 is mounted on the outlet of the auxiliary methanol tank methanol evaporator 37, and the other end is mounted on the lower end of the three-way joint 30. One end of the three-way joint to the carbon canister methanol evaporation pipe 22 is mounted on the right end of the three-way joint 30, and the two interfaces at the other end are mounted on the air inlet of the carbon canister 19 and the air inlet of the carbon canister 20, respectively. The two interfaces at one end of the carbon canister to the engine carbon canister solenoid valve methanol evaporation pipe 21 are respectively installed on the air outlet of carbon canister 19 and the air outlet of carbon canister 2 20, and the other end is installed on the air inlet of the carbon canister solenoid valve on the engine body.

[0021] Beneficial effects of the utility model:

[0022] 1. The fuel supply system of this methanol hybrid tractor includes a methanol supply system, a gasoline supply system and a methanol evaporation system.

[0023] 2. The dual-chamber design of the methanol tank with a series methanol supply system and integrated gasoline tank greatly increases the volume of the methanol tank under the condition of limited vehicle layout space, thereby ensuring the reliability of vehicle driving, saving transportation costs and increasing driving range.

[0024] 3. Use a separate gasoline supply system to cold start the methanol engine at low temperature to avoid the problem of methanol waxing and being unable to start in cold areas in winter. This system has a large volume and a compact and reliable structure, and also provides low temperature cold start fuel supply.

[0025] 4. It has a separate evaporation pipeline system, which catalyzes the volatilized methanol gas through the carbon canister and then inputs it into the methanol engine for recycling.

Claims

1. A methanol hybrid tractor fuel supply system, characterized by: The invention comprises a main methanol tank (1), a methanol coarse filter (2), a methanol level sensor (3), a main methanol tank methanol return pipe (4), a main methanol tank methanol inlet pipe (5), a main methanol tank methanol evaporator (6), a main methanol tank evaporation pipe (7), a methanol coarse filter to a methanol pump methanol pipe (8), a methanol pump (9), a gasoline level sensor (10), a methanol pipe from a methanol pump to a methanol pressure regulating valve (11), a gasoline tank oil inlet pipe (12), a gasoline pump (13), a gasoline pipe from a gasoline pump to a gasoline filter (14), a gasoline filter (15), a gasoline pipe from a gasoline filter to a gasoline pressure regulating valve (16), a gasoline pressure regulating valve to a gasoline tank oil return pipe (17), a gasoline pipe from a gasoline pressure regulating valve to an engine (18), a carbon canister (19), a carbon canister (20), a carbon canister to an engine carbon canister solenoid valve methanol evaporation pipe (21), a three-way joint to a carbon canister methanol evaporation pipe (22), a gasoline pressure regulating valve ( 23), methanol fine filter to engine methanol inlet pipe (24), methanol fine filter (25), methanol pressure regulating valve to methanol fine filter methanol pipe (26), methanol pressure regulating valve (27), methanol fine filter to oil drain battery valve return alcohol pipe (28), methanol pressure regulating valve to three-way joint return alcohol pipe (29), three-way joint 1 (30), auxiliary methanol tank evaporation pipe (31), oil drain solenoid valve (32), three-way joint to oil drain solenoid valve return alcohol pipe (33), three-way joint 2 (34), main and auxiliary methanol tanks in series methanol pipe (35), auxiliary methanol tank (36) and auxiliary methanol tank methanol evaporator (37), forming a methanol supply system part, a gasoline supply system part and a methanol evaporation system part, wherein the main methanol tank (1) is a double-cavity box body, the main cavity (101) is a methanol tank, the auxiliary cavity (102) is a gasoline tank, and the auxiliary methanol tank (36) is a single-cavity box body; Methanol supply system: The methanol level sensor (3) is mounted on the upper plane of the main chamber (101) of the main methanol tank (1); one end of the methanol pipe (35) connecting the main and auxiliary methanol tanks in series is mounted on the lower plane of the main chamber (101) of the main methanol tank (1), and the other end is mounted on the lower plane of the auxiliary methanol tank (36); one end of the methanol inlet pipe (5) of the main methanol tank is mounted on the methanol outlet of the methanol level sensor (3), and the other end is mounted on the methanol inlet of the methanol coarse filter (2). The methanol coarse filter (2) is mounted on the main The side of the main chamber (101) of the methanol tank (1); one end of the methanol pipe (8) from the methanol coarse filter to the methanol pump is mounted on the methanol outlet of the methanol coarse filter (2), and the other end is mounted on the methanol inlet of the methanol pump (9); one end of the methanol pipe (11) from the methanol pump to the methanol pressure regulating valve is mounted on the methanol outlet of the methanol pump (9), and the other end is mounted on the methanol inlet of the methanol pressure regulating valve (27); one end of the methanol pipe (26) from the methanol pressure regulating valve to the methanol fine filter is mounted on the methanol pressure regulating valve (27). The methanol filter is connected to the alcohol outlet, and the other end is connected to the alcohol inlet of the methanol fine filter (25); one end of the methanol fine filter to the engine alcohol inlet pipe (24) is connected to the alcohol outlet of the methanol fine filter (25), and the other end is connected to the alcohol inlet of the engine body; one end of the methanol fine filter to the oil drain battery valve alcohol return pipe (28) is connected to the alcohol return port on the upper plane of the methanol fine filter (25), and the other end is connected to the alcohol inlet of the oil drain solenoid valve (32); the three-way connector to the oil drain solenoid valve alcohol return pipe ( One end of the methanol return pipe (29) from the methanol pressure regulating valve to the three-way joint is mounted on the lower end of the methanol return pipe (27), and the other end is mounted on the right end of the three-way joint (34); one end of the main methanol tank return pipe (4) is mounted on the return pipe of the methanol level sensor (3), and the other end is mounted on the upper end of the three-way joint (34); Gasoline supply system: The gasoline level sensor (10) is mounted on the upper plane of the secondary chamber (102) of the main methanol tank (1). One end of the gasoline tank oil inlet pipe (12) is mounted on the oil outlet of the gasoline level sensor (10), and the other end is mounted on the oil inlet of the gasoline pump (13). One end of the gasoline pipe (14) from the gasoline pump to the gasoline filter is mounted on the oil outlet of the gasoline pump (13), and the other end is mounted on the oil inlet of the gasoline filter (15). The gasoline pipe (16) from the gasoline filter to the gasoline pressure regulating valve is mounted on the gasoline filter. ) is mounted on the oil outlet of the gasoline filter (15), and the other end is mounted on the oil inlet of the gasoline pressure regulating valve (23); one end of the gasoline pressure regulating valve to the engine gasoline pipe (18) is mounted on the oil outlet of the gasoline pressure regulating valve (23), and the other end is mounted on the oil inlet of the engine body; one end of the gasoline pressure regulating valve to the gasoline tank return pipe (17) is mounted on the oil return port at the lower end of the gasoline pressure regulating valve (23), and the other end is mounted on the oil return port of the gasoline level sensor (10); Methanol evaporation system part: The main methanol tank methanol evaporator (6) is mounted on the upper plane of the main chamber (101) of the main methanol tank (1), and the auxiliary methanol tank methanol evaporator (37) is mounted on the upper plane of the auxiliary methanol tank (36); one end of the main methanol tank evaporation pipe (7) is mounted on the outlet of the main methanol tank methanol evaporator (6), and the other end is mounted on the upper port of the three-way joint (30); one end of the auxiliary methanol tank evaporation pipe (31) is mounted on the outlet of the auxiliary methanol tank methanol evaporator (37), and the other end is mounted on the upper port of the three-way joint (30). 0); one end of the three-way joint to the carbon canister methanol evaporation pipe (22) is installed on the right end of the three-way joint (30), and the two interfaces at the other end are respectively installed on the air inlet of the carbon canister (19) and the air inlet of the carbon canister (20); the two interfaces at one end of the carbon canister to the engine carbon canister solenoid valve methanol evaporation pipe (21) are respectively installed on the air outlet of the carbon canister (19) and the air outlet of the carbon canister (20), and the other end is installed on the air inlet of the carbon canister solenoid valve on the engine body.

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