Novel supercharged engine general arrangement structure

Abstract

A novel supercharged engine general arrangement structure relates to the technical field of engine research and development. A valve chamber cover and oil filler cap assembly and a rear cam bearing cap assembly are arranged above the engine body; a synchronous chain housing assembly, a generator, a crankshaft pulley assembly and an air conditioner compressor are arranged at the front end; an intake manifold assembly, an electronic throttle body, a thermostat and housing assembly, a fuel gas injection rail assembly and an oil rail assembly are arranged on the intake side; a turbocharger assembly, a three-way catalyst assembly, a water pump and adapter assembly and a water inlet pipe and O-shaped ring assembly are arranged on the exhaust side; a small circulation water return steel pipe assembly, an oil cooler connecting pipe assembly, a flywheel shell assembly and a flywheel disc and gear ring assembly are arranged at the rear end of the flywheel shell assembly; and an oil pan and an oil filter are arranged below. According to the structure that the supercharged engine with the fuel gas and fuel oil dual-fuel supply with the displacement of 2.0 L is overall arranged at the inclination angle of 0-10 degrees, the whole engine is compact in arrangement and integrated in design, and the energy-saving and environment-friendly requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of engine research and development, and in particular to a novel overall layout structure of a supercharged engine. Background Art

[0002] In today's automotive industry, fuel consumption and emission regulations for fuel-supercharged engines are becoming increasingly stringent. While meeting normal vehicle driving conditions, there is an urgent need to develop a supercharged engine that uses gas as the main fuel to meet energy-saving and environmental protection requirements. Summary of the Invention

[0003] To address the shortcomings of the background technology, the present invention provides a new type of supercharged engine overall layout structure, which enables the 2.0L supercharged engine with dual fuel supply of gas and oil to be arranged at an overall tilt angle of 0°~10°. The overall layout of the machine is compact and the design is integrated, which effectively realizes vehicle-to-engine matching and meets energy-saving and environmental protection requirements.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a novel supercharged engine overall layout structure, including a 2.0L displacement engine body, the engine body being a supercharged engine supplied with dual fuels of gas and oil, arranged in an inverted manner toward the exhaust side at an inclination angle of 0° to 10°, a valve chamber cover and oil filler cap assembly and a rear cam bearing cover assembly arranged above the engine body, an ignition coil arranged on the valve chamber cover and oil filler cap assembly, and a camshaft position sensor arranged on the rear cam bearing cover assembly; a synchronous chain cover assembly arranged at the front end of the engine body, a generator arranged on the upper part of the synchronous chain cover assembly, and a crankshaft pulley assembly and an air-conditioning compressor arranged on the lower part of the synchronous chain cover assembly; an intake manifold assembly arranged on the intake side of the engine body The engine body is composed of an electronic throttle body, a thermostat and a cover assembly, a gas injection rail assembly and an oil rail assembly. The exhaust side of the engine body is arranged with a turbocharger assembly and a three-way catalytic converter assembly, and the front oxygen sensor and the rear oxygen sensor are installed on the three-way catalytic converter assembly; the front end of the exhaust side of the engine body is arranged with a water pump and adapter assembly and a water inlet pipe and O-ring assembly; the rear end of the engine body is arranged with a small circulation return water steel pipe assembly, an oil cooler connecting pipe assembly, a flywheel housing assembly and a flywheel disc and ring gear assembly; the oil pan assembly is arranged below the engine body, and the oil filter is arranged at the front end of the oil pan assembly; the engine body cylinder block and the gearbox are connected by a flywheel housing adapter, the flywheel disc and ring gear assembly are assembled in the flywheel housing assembly, and the power is transmitted to the clutch by the flywheel disc.

[0005] Furthermore, in the cooling system of the engine body, the coolant enters the water pump and adapter assembly through the water inlet pipe and O-ring assembly and flows into the exhaust side of the cylinder block assembly. After flowing through the cylinder block assembly and the cylinder head assembly, it flows back to the cylinder block assembly and then flows out from the intake side and rear end of the cylinder block assembly in two ways; the first way enters the vehicle cooling system from the intake side of the cylinder block through the thermostat and cover assembly, and a diversion is added to the thermostat and cover assembly, and passes through the small circulation return hose assembly, the small circulation return steel pipe assembly, the small circulation connecting hose assembly, the water inlet pipe and the O-ring in sequence. The oil flows back to the water pump and adapter assembly; the rest of the way from the rear end of the cylinder body passes through the oil cooler connecting pipe assembly, the oil cooler water inlet hose assembly, the oil cooler, the oil cooler return hose assembly, the small circulation return steel pipe assembly, the small circulation connecting hose assembly, the water inlet pipe and the O-ring assembly, and finally flows back to the water pump and adapter assembly to re-enter the cooling cycle. A diversion is added to the oil cooler connecting pipe assembly, and it is injected into the electronic throttle body pipeline through the throttle body preheating water inlet hose assembly to preheat it, and then flows back to the small circulation return steel pipe assembly through the throttle body preheating water return hose assembly.

[0006] Furthermore, the gear train of the engine body is driven by the crankshaft pulley assembly to drive the generator belt, which drives the generator and air-conditioning compressor to work, and the tension of the generator belt is maintained by the automatic tensioner; the crankshaft pulley assembly also drives the water pump belt to drive the water pump to work.

[0007] Furthermore, the fuel supply method of the engine body includes: Gas supply: The gas in the vehicle's gas cylinder passes through the vehicle's gas pipeline and is reduced in pressure by a pressure reducing valve before entering the gas rail assembly. The ECU controls the injection timing, and the gas rail assembly distributes the gas to each intake duct, ultimately allowing the injected gas to fully mix with the air in the cylinder and burn at the ignition moment. Fuel supply: The fuel output by the vehicle's fuel pump reaches the fuel rail assembly through the vehicle's fuel pipeline. The ECU controls the injection timing, and the fuel rail assembly distributes the fuel to each intake port, ultimately allowing the injected fuel to fully mix with the air in the cylinder and burn at the ignition moment.

[0008] Furthermore, the intake manifold assembly includes an intake manifold upper shell, a vacuum booster nozzle, an intake manifold lower shell, an oil and gas desorption nozzle, a gas injection rail interface and an intake temperature and pressure sensor interface. The intake manifold assembly is sealed and fixed to the cylinder head assembly through a flange sealing rubber ring, and the intake end is connected to the electronic throttle body.

[0009] Furthermore, the intake end of the intake manifold assembly is equipped with a carbon canister control valve for adjusting the intake flow and balancing the fuel tank pressure.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a structure that enables a 2.0L displacement supercharged engine that supplies both gas and oil as dual fuels to be arranged at an inclination angle of 0° to 10°, innovatively taking into account both gas and oil dual fuel supply schemes on the supercharged engine, and adopting a flywheel housing adapter scheme at the rear end of the cylinder body, which can be adjusted according to the layout requirements of the entire vehicle, with flexible layout, ensuring that the various engine systems are arranged as compactly as possible while meeting the requirements of the entire vehicle, with an integrated design, meeting the cabin layout requirements of vehicles of the same displacement level, and meeting energy saving and environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a three-dimensional schematic diagram of the present invention; Figure 2 It is a front-end schematic diagram of the present invention; Figure 3 It is a schematic diagram of the back end of the present invention; Figure 4 It is a structural schematic diagram of the intake manifold assembly of the present invention.

[0012] In the figure: 1. Cylinder head assembly; 2. Small circulation return water steel pipe assembly; 3. Oil cooler connecting pipe assembly; 4. Flywheel housing assembly; 5. Flywheel disc and ring gear assembly; 6. Oil pan assembly; 7. Oil filter; 8. Oil cooler inlet hose assembly; 9. Oil cooler return water hose assembly; 10. Electronic throttle body; 11. Small circulation return water hose assembly; 12. Intake manifold assembly; 13. Gas injection rail assembly; 14. Fuel rail assembly; 15. Valve cover and oil filler cap assembly; 16. Ignition coil; 17. Synchronous chain cover assembly; 18. Alternator; 19. Alternator belt; 20. Automatic tensioner; 21. Crankshaft pulley assembly; 22. Air conditioning compressor; 23. Water inlet pipe and O-ring assembly; 24. Water pump belt Belt; 25. Water pump and adapter assembly; 26. Turbocharger assembly; 27. Front oxygen sensor; 28. Rear cam bearing cover assembly; 29. Small circulation connecting hose assembly; 30. Three-way catalytic converter assembly; 31. Rear oxygen sensor; 32. Cylinder block assembly; 33. Thermostat and cover assembly; 34. Throttle body preheating water inlet hose assembly; 35. Throttle body preheating water return hose assembly; 36. Carbon canister control valve; 37. Engine body; 38. Camshaft position sensor; 12-1. Intake manifold upper half shell; 12-2. Vacuum booster take-off nozzle; 12-3. Intake manifold lower half shell; 12-4. Oil and gas desorption take-off nozzle; 12-5. Gas injection rail interface; 12-6. Intake air temperature and pressure sensor interface. DETAILED DESCRIPTION

[0013] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] like Figures 1 to 3 The figure shows a novel supercharged engine overall layout. The engine includes an electronic fuel injection system, engine block, crankshaft system, valvetrain, timing system, cooling system, lubrication system, intake system, exhaust system, oil-gas desorption system, and electrical accessory systems. Key components include the intake manifold assembly, turbocharger assembly, hydraulic tappets, roller rocker arms, fuel rails, and a variable-displacement oil pump. The engine block 37 is inverted and tilted toward the exhaust at an angle of 0° to 10°. Above the engine block 37 are the valve cover and oil filler cap assembly 15 and the rear camshaft bearing cap assembly 28. The ignition coil 16 is mounted on the valve cover and oil filler cap assembly 15, and the camshaft position sensor 38 is mounted on the rear camshaft bearing cap assembly. At the front of the engine block 37 is the timing chain housing assembly 17. A generator 18 is located above the timing chain housing assembly 17, while the crankshaft pulley assembly 21 and air-conditioning compressor 22 are located below. The intake side of the engine body 37 houses the intake manifold assembly 12, the electronic throttle body 10, the thermostat and housing assembly 33, the fuel rail assembly 13, and the fuel rail assembly 14. The exhaust side of the engine body 37 houses the turbocharger assembly 26 and the three-way catalytic converter assembly 30, mounted on which are the front oxygen sensor 27 and the rear oxygen sensor 31. At the front end of the exhaust side of the engine body 37 are the water pump and adapter assembly 25 and the water inlet pipe and O-ring assembly 23. At the rear end of the engine body 37 are the small-circuit return steel pipe assembly 2, the oil cooler connecting pipe assembly 3, the flywheel housing assembly 4, and the flywheel disc and ring gear assembly 5 (power output). Below the engine body 37 is the oil pan assembly 6, with the oil filter 7 located at the front end of the oil pan assembly 6.

[0015] In the engine structure, the cylinder block and the gearbox are connected using a flywheel housing adapter solution. The flywheel disc and the ring gear assembly 5 are assembled in the flywheel housing assembly 4. The power is transmitted from the flywheel disc to the clutch. This structure can achieve a flywheel disc diameter larger than the outer profile of the gantry at the rear end of the cylinder block, and can be adaptively adjusted according to the matching requirements of the vehicle, with a wide range of adaptability and flexible layout.

[0016] In the engine's cooling system, coolant enters the water pump and adapter assembly 25 through the water inlet pipe and O-ring assembly 23 and flows into the exhaust side of the cylinder block assembly 32. After flowing through the cylinder block assembly 32 and the cylinder head assembly 1, it returns to the cylinder block assembly 32 and then splits into two streams, flowing out from the intake side and rear end of the cylinder block assembly 32. The first stream flows from the intake side of the cylinder block through the thermostat and cover assembly 33 and enters the vehicle's cooling system. Among them, the first path adds a branch in the thermostat and cover assembly 33, and the branch flows back to the water pump and adapter assembly 25 through the small circulation return hose assembly 11, the small circulation return steel pipe assembly 2, the small circulation connecting hose assembly 29, the water inlet pipe and O-ring assembly 23 in sequence; the second path flows from the rear end of the cylinder block through the oil cooler connecting pipe assembly 3, the oil cooler inlet hose assembly 8, the oil cooler, the oil cooler return hose assembly 9, the small circulation return steel pipe assembly 2, the small circulation connecting hose assembly 29, the water inlet pipe and O-ring assembly 23, and finally flows back to the water pump and adapter assembly 25 to re-enter the cooling cycle. Among them, the latter path adds a branch in the oil cooler connecting pipe assembly 3, and the branch is injected into the pipeline of the electronic throttle body 10 through the throttle body preheating water inlet hose assembly 34 to preheat it, and then flows back to the small circulation return water steel pipe assembly 2 through the throttle body preheating return water hose assembly 35.

[0017] The gear train in the engine structure is driven by a crankshaft pulley assembly 21, which in turn drives the generator belt 19, which in turn drives the generator 18 and air conditioning compressor 22. Generator 18 provides power generation, and air conditioning compressor 22 provides cooling power. An automatic tensioner 20 maintains the appropriate tension on generator belt 19. In addition, the crankshaft pulley assembly 21 also drives the water pump belt 24, which in turn drives the water pump.

[0018] There are two types of fuel supply methods in the engine structure: Method 1: The gas in the vehicle's gas cylinder passes through the vehicle's gas pipeline to the vicinity of the engine, is reduced in pressure by a pressure reducing valve, and enters the gas injection rail assembly 13. The ECU controls the injection timing, and the gas injection rail assembly 13 distributes the gas to each intake duct at a certain pressure. Ultimately, the gas injected from the gas injection rail assembly 13 is fully mixed with the air in the cylinder and burns at the ignition moment. Method 2: The fuel output by the vehicle's fuel pump passes through the vehicle's fuel pipeline to the engine's fuel rail assembly 14. The ECU controls the injection timing, and the fuel rail assembly 14 distributes the fuel to each intake duct at a certain pressure. Ultimately, the fuel sprayed from the injector on the fuel rail assembly 14 is fully mixed with the air in the cylinder and burned at the ignition moment.

[0019] like Figure 4As shown, the intake manifold assembly 12 primarily comprises an upper intake manifold shell 12-1, a vacuum booster nozzle 12-2, a lower intake manifold shell 12-3, an oil / gas desorption nozzle 12-4, a fuel rail interface 12-5, and an intake air temperature and pressure sensor interface 12-6. The intake manifold assembly 12 is sealed and secured to the cylinder head assembly 1 via a flange sealing rubber ring. The intake end is connected to the electronic throttle body 10. Furthermore, a canister control valve 36 is installed at the intake end of the intake manifold assembly 12 to regulate intake air flow under varying engine operating conditions and balance fuel tank pressure, ensuring environmental protection and efficient fuel utilization.

[0020] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other configurations without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A novel supercharged engine overall layout structure, comprising a 2.0L displacement engine body (37), characterized in that: The engine body (37) is a supercharged engine supplied with gas and oil dual fuels, and is arranged in an inverted manner toward the exhaust side at an inclination angle of 0° to 10°. A valve cover and oil filling port cover assembly (15) and a rear cam bearing cover assembly (28) are arranged above the engine body (37), an ignition coil (16) is arranged on the valve cover and oil filling port cover assembly (15), and a camshaft position sensor (38) is arranged on the rear cam bearing cover assembly (28); a synchronous chain cover assembly (17) is arranged at the front end of the engine body (37), a generator (18) is arranged on the upper part of the synchronous chain cover assembly (17), and a crankshaft pulley assembly (21) and an air conditioning compressor (22) are arranged on the lower part; an intake manifold assembly (12), an electronic throttle body (10), a thermostat and cover assembly (33), a gas injection rail assembly (13) and an oil pump assembly (22) are arranged on the intake side of the engine body (37). The engine body (37) is provided with a rail assembly (14), a turbocharger assembly (26) and a three-way catalytic converter assembly (30) on the exhaust side, and a front oxygen sensor (27) and a rear oxygen sensor (31) are installed on the three-way catalytic converter assembly (30); a water pump and adapter assembly (25) and a water inlet pipe and O-ring assembly (23) are arranged at the front end of the exhaust side of the engine body (37); a small circulation return water steel pipe assembly (2), an oil cooler connecting pipe assembly (3), a flywheel housing assembly (4) and a flywheel disc and ring gear assembly (5) are arranged at the rear end of the engine body (37); an oil pan assembly (6) is arranged below the engine body (37), and an oil filter (7) is arranged at the front end of the oil pan assembly (6); the cylinder block and the gearbox of the engine body (37) are connected by a flywheel housing, the flywheel disc and ring gear assembly (5) are assembled in the flywheel housing assembly (4), and power is transmitted to the clutch by the flywheel disc.

2. A novel supercharged engine overall layout structure according to claim 1, characterized in that: In the cooling system of the engine body (37), the coolant enters the water pump and adapter assembly (25) from the water inlet pipe and O-ring assembly (23) and flows into the exhaust side of the cylinder assembly (32), flows through the cylinder assembly (32) and the cylinder head assembly (1), and then flows back to the cylinder assembly (32), and then is divided into two paths and flows out from the intake side and rear end of the cylinder assembly (32); the first path enters the vehicle cooling system from the intake side of the cylinder through the thermostat and cover assembly (33), and a branch is added in the thermostat and cover assembly (33), and passes through the small circulation return hose assembly (11), the small circulation return steel pipe assembly (2), the small circulation connecting hose assembly (29), the water inlet pipe and O-ring assembly in sequence. (23) flows back to the water pump and adapter assembly (25); the oil then flows from the rear end of the cylinder block through the oil cooler connecting pipe assembly (3), the oil cooler water inlet hose assembly (8), the oil cooler, the oil cooler return hose assembly (9), the small circulation return steel pipe assembly (2), the small circulation connecting hose assembly (29), the water inlet pipe and O-ring assembly (23), and finally flows back to the water pump and adapter assembly (25) to re-enter the cooling cycle. A branch is added to the oil cooler connecting pipe assembly (3), and the oil is injected into the electronic throttle body (10) through the throttle body preheating water inlet hose assembly (34) to preheat it, and then flows back to the small circulation return steel pipe assembly (2) through the throttle body preheating water return hose assembly (35).

3. The novel supercharged engine overall layout structure according to claim 1 is characterized in that: The gear train of the engine body (37) is driven by a crankshaft pulley assembly (21) to drive a generator belt (19), which drives the generator (18) and the air-conditioning compressor (22) to work, and the tension of the generator belt (19) is maintained by an automatic tensioning pulley (20); the crankshaft pulley assembly (21) also drives a water pump belt (24), which drives the water pump to work.

4. The novel supercharged engine overall layout structure according to claim 1 is characterized in that: The fuel supply method of the engine body (37) includes: Gas supply: The gas in the vehicle's gas cylinder passes through the vehicle's gas pipeline and is reduced in pressure by a pressure reducing valve before entering the gas injection rail assembly (13). The injection timing is controlled by the ECU, and the gas injection rail assembly (13) distributes the gas to each intake duct, ultimately allowing the injected gas to be fully mixed with the air in the cylinder and burn at the ignition time. Fuel supply: The fuel output by the vehicle fuel pump reaches the fuel rail assembly (14) through the vehicle fuel pipeline. The ECU controls the injection timing. The fuel rail assembly (14) distributes the fuel to each intake port, ultimately allowing the injected fuel to fully mix with the air in the cylinder and burn at the ignition moment.

5. The novel supercharged engine overall layout structure according to claim 1 is characterized in that: The intake manifold assembly (12) comprises an intake manifold upper shell (12-1), a vacuum booster nozzle (12-2), an intake manifold lower shell (12-3), an oil and gas desorption nozzle (12-4), a fuel injection rail interface (12-5) and an intake air temperature and pressure sensor interface (12-6). The intake manifold assembly (12) is sealed and fixed to the cylinder head assembly (1) through a flange sealing rubber ring, and the intake end is connected to the electronic throttle body (10).

6. A novel supercharged engine overall layout structure according to claim 5, characterized in that: The intake end of the intake manifold assembly (12) is provided with a carbon canister control valve (36) for regulating the intake flow and balancing the fuel tank pressure.

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