An inverted horizontal gasoline engine or gas engine structure

Abstract

An inverted horizontal gasoline or gas engine structure belongs to the field of engine technology. It provides a structure that enables an inverted gasoline or gas engine with a displacement of 1.751L to 2.049L to be arranged as a whole at an inclination angle of 40° to 60°. The gasoline or gas engine body is arranged at an inclination angle of α, the upper right part of the gasoline or gas engine body is connected to a valve cover by bolts, the upper part of the gasoline or gas engine body is connected to an intake manifold by bolts, a PCV hose is connected between the PCV valve interface of the valve cover and the PCV nozzle of the intake manifold, and an EGR valve is arranged at an angle of β to the left on the upper half of the gasoline or gas engine body. The present invention is aimed at a compact engine compartment and effectively solves the problem that a horizontal gasoline / gas engine cannot be arranged in the width direction of the compartment.

Description

Technical Field

[0001] The invention belongs to the technical field of engines, and in particular relates to an inverted horizontal gasoline engine or gas engine structure. Background Art

[0002] The inverted gasoline or gas engines of existing automobiles with a displacement of 1.751L to 2.049L are all arranged upright. As gasoline engines are used more and more widely and the engine compartment layout becomes more and more compact, it is required that the gasoline or gas engine be arranged in the original narrow automobile cabin space and avoid corresponding parts, and ensure the installation requirements of the gasoline or gas engine, making the layout of the gasoline or gas engine somewhat difficult. Summary of the invention

[0003] The purpose of the present invention is to provide a structure that allows an inverted gasoline engine or gas engine with a displacement of 1.751L to 2.049L to be arranged as a whole at an inclination angle of 40° to 60°, which can ensure the connection between the gasoline engine or gas engine in the engine compartment and the entire cabin, and also ensure the installation space of the gasoline engine or gas engine.

[0004] The technical solution adopted by the present invention is: an inverted horizontal gasoline engine or gas engine structure, including a gasoline engine or gas engine body, a valve chamber cover, an intake manifold and an EGR valve; the gasoline engine or gas engine body is arranged at an inclined angle of α, the upper right part of the gasoline engine or gas engine body is connected to the valve chamber cover by bolts, the upper part of the gasoline engine or gas engine body is connected to the intake manifold by bolts, a PCV hose is connected between the PCV valve interface of the valve chamber cover and the PCV nozzle of the intake manifold, and the EGR valve is arranged at an angle of β inclined to the left on the upper half of the gasoline engine or gas engine body.

[0005] The beneficial effects of the present invention are:

[0006] 1. The present invention is a 1.751L-2.049L inverted gasoline engine / gas engine horizontally arranged. Aiming at a compact engine compartment, the intake manifold, exhaust manifold, left suspension, right suspension, and oil pan are reasonably designed so that the 1.751L-2.049L inverted gasoline engine / gas engine is arranged as a whole at an inclination angle of 40°-60°, which effectively solves the problem that the gasoline engine / gas engine cannot be arranged in the width direction of the compartment when it is arranged horizontally. In the height direction, the height of the whole machine is reduced by 46mm compared with the upright arrangement of the gasoline engine / gas engine, thereby improving the layout adaptability.

[0007] 2. The gasoline or gas engine has a reasonable structure, taking into account the longer air duct length required for intake and the shortest possible exhaust duct length;

[0008] 3. The gasoline engine or gas engine has a reasonable structure, taking into account the layout of the EGR valve and the space avoidance of the EGR pipe;

[0009] 4. The layout of the gasoline or gas engine is reasonable, taking into account the oil injection angle and oil capacity;

[0010] 5. The gasoline engine or gas engine uses round shock-absorbing pads on the left and right suspensions to make the overall structure compact and easy to install;

[0011] 6. The layout of the gasoline engine or gas engine is reasonable, and the automatic tensioning wheel is adopted to take into account the common layout of the inclined and vertical gasoline engine or gas engine wheel system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the back end of the present invention;

[0013] Figure 2 It is a front-end schematic diagram of the present invention;

[0014] Figure 3 yes Figure 1 Upper left side view;

[0015] Figure 4 Schematic diagram of the exhaust manifold structure of the present invention;

[0016] Figure 5 It is a schematic diagram of the left suspension, right suspension and rear suspension structure of the present invention;

[0017] Figure 6 Schematic diagram of the intake manifold structure of the present invention;

[0018] Among them: 1-intake manifold; 1-1-intake port; 1-2-pressure stabilizing chamber; 1-3-intake duct; 1-4-outlet; 1-5-EGR mounting boss; 2-oil filling port cover; 3-valve cover; 4-EGR valve; 5-water outlet adapter; 6-gasoline engine or gas engine body; 7-exhaust manifold; 7-1-collecting pipe; 7-2-rear flange; 7-3-oxygen sensor mounting seat; 7-4-front flange; 7-5-branch pipe; 8-right suspension; 8-1-right suspension bracket assembly; 9-right shock absorber pad assembly; 10-PCV hose; 11-EGR pipe; 12-rear suspension; 12-1-rear suspension bracket assembly; 13-Left suspension; 13-1-Left suspension bracket assembly; 14-Left shock absorber pad assembly; 15-Water outlet pipe assembly; 16-Transmission; 17-Oil pan; 18-Lower oil pan; 19-Generator pulley; 20-Water pump belt; 21-Water pump pulley; 22-A / C compressor pulley; 23-Crankshaft pulley; 24-Automatic tensioner assembly; 25-Steering pump belt; 26-Steering pump pulley. DETAILED DESCRIPTION

[0019] like Figure 1 to Figure 6As shown, the gasoline engine or gas engine body 6 is arranged tilted to the right at an angle of 40° to 60°, the gasoline engine or gas engine body 6 is connected to the valve cover 3 by bolts on the upper right side, the gasoline engine or gas engine body 6 is connected to the intake manifold 1 by bolts on the upper side, the PCV hose 10 is connected between the PCV valve interface of the valve cover 3 and the PCV nozzle of the intake manifold 1, and the EGR valve 4 is arranged at an angle of 35° to 45° to the left on the upper half of the gasoline engine or gas engine body 6. From the rear of the inverted horizontal gasoline engine or gas engine, the gasoline engine or gas engine body 6 is arranged tilted to the right at an angle of 40° to 60°, and the intake manifold 1 connected by bolts on the upper side is in a lying S shape as a whole, extending to the leftmost side of the whole, so as to obtain a sufficient airway length;

[0020] like Figure 6 As shown, the intake manifold 1 includes an air intake port 1-1, a pressure stabilizing chamber 1-2 and an air intake duct 1-3. The air intake port 1-1 is located at the rear end of the pressure stabilizing chamber 2, and the air intake duct 1-3 is wave-shaped and located at the front side of the pressure stabilizing chamber 2. The four air intake ducts 1-3 connect the air intake port 1-1 and the air outlet 1-4. The material is the same as that of the intake manifold body. An EGR mounting boss 1-5 is arranged on the left side of the pressure stabilizing chamber 2.

[0021] The outside air first enters the intake manifold pressure stabilizing chamber 1-2 through the air inlet 1-1, and then enters the cylinder from the outlet flange along the four wave-shaped intake passages 1-3 to participate in combustion; the EGR installation boss 1-5 installs the EGR pipe 11, and the exhaust gas passes through the EGR valve 4 from the rear end of the cylinder head and enters the intake manifold 1 through the EGR pipe 11. Under the impact of the intake air flow, it is dispersed in the pressure stabilizing chamber and participates in combustion with the intake of each cylinder. It meets the requirements of the National VI engine. The intake passage is reasonably designed in a limited design space to improve the intake performance and save costs.

[0022] A transverse EGR pipe 11 is arranged between the EGR valve 4 and the EGR inlet of the pressure stabilizing chamber 1-2 of the intake manifold 1. The EGR pipe 11 is arranged along the intake manifold 1 and the gasoline engine or gas engine body 6, and avoids the water outlet pipe assembly 15 below. The structure is compact and can better adapt to the compact cabin space.

[0023] like Figures 1 to 3 As shown, a water outlet adapter 5 is arranged at the rear end of the gasoline engine or gas engine body 6 below the EGR pipe 11, and the water outlet pipe assembly 15 passes through the bottom of the intake manifold 1 and extends to the front end of the gasoline engine or gas engine body 6.

[0024] like Figures 1 to 3 As shown, the oil filling port cover 2 on the valve cover 3 is arranged at the highest point on the left side of the valve cover 3, and the angle is close to horizontal, which is convenient for oil filling;

[0025] The stainless steel exhaust manifold 7 connected by bolts at the lower right of the gasoline engine or gas engine body 6 adopts the most compact structure, consisting of four exhaust branch pipes directly connected to a gradually expanding exhaust main pipe, which directly leads the exhaust to the rear. In order to ensure sufficient oil volume, the oil pan 17 connected by bolts at the lower left is raised upwards, and the lower part is designed to be horizontal, and the whole is made into an irregular hexahedron. At the same time, in order to facilitate manufacturing, the oil pan 17 is divided into two parts, an upper oil pan and a lower oil pan 18. The gasoline engine / gas engine is rectangular as a whole, with a reasonable structure, which can facilitate oil filling and ensure oil volume;

[0026] like Figure 4 As shown, the exhaust manifold 7 includes a collecting pipe 7-1, a rear flange 7-2, an oxygen sensor mounting seat 7-3, a front flange 7-4 and four branch pipes 7-5; the upper ends of the four branch pipes 7-5 are connected to four air inlet holes provided on the front flange 7-4, the lower ends of the four branch pipes 7-5 are connected to the collecting pipe 7-1, the exhaust port of the collecting pipe 7-1 is connected to the exhaust holes provided on the rear flange 7-2, the oxygen sensor mounting seat 7-3 is fixed on the upper end surface of the rear flange 7-2, and the lower ends of the four branch pipes 7-5 are bent downward, and the bending direction is consistent.

[0027] The exhaust manifold 7 further gathers the exhaust gas for discharge by bending the four branch pipes 7-5 downward. The four branch pipes 7-5 bend downward so that the exhaust manifold 7 occupies a smaller space, and the exhaust manifold 7 is closer to the engine body. The exhaust manifold 7 has a better direction and lower exhaust back pressure, which effectively improves the engine performance.

[0028] like Figure 1 to Figure 3 As shown, the left side of the gasoline or gas engine body 6 is connected to the left suspension 13 between the intake manifold 1 and the oil pan 17 by bolts, the right side of the gasoline or gas engine body 6 is connected to the right suspension 8 between the exhaust manifold 7 and the oil pan 17 by bolts, and the rear suspension 12 is connected to the transmission 16 behind the gasoline or gas engine body 6 by bolts.

[0029] like Figure 1 to Figure 4 As shown, the left suspension 13 is composed of a left suspension bracket assembly 13-1 and a left shock-absorbing pad assembly 14 pressed onto the left suspension bracket assembly 13-1, the right suspension 8 is composed of a right suspension bracket assembly 8-1 and a right shock-absorbing pad assembly 9 pressed onto the right suspension bracket assembly 8-1, and the rear suspension 12 is composed of a rear suspension bracket assembly 12-1 and a rear shock-absorbing pad assembly 12-2 pressed onto the rear suspension bracket assembly 12-1.

[0030] The three circular shock-absorbing pads arranged above, namely the right shock-absorbing pad assembly 9, the rear shock-absorbing pad assembly 12-2, and the left shock-absorbing pad assembly 14, can be conveniently and firmly connected to the bracket in the engine room of the automobile. The use of circular shock-absorbing pads makes the overall structure compact and easy to install;

[0031] like Figure 2 As shown, the first-layer gear train of the drive pulley system in front of the gasoline engine or gas engine body 6 includes: a generator pulley 19, a water pump pulley 21, an air-conditioning compressor pulley 22 and a crankshaft pulley 23 connected by a water pump belt 20, and an automatic tensioning pulley assembly 24 is used to tension the water pump belt 20. The spatial arrangement can realize the common arrangement of the inclined and vertical gasoline engine / gas engine gear trains.

[0032] The second-layer gear train of the transmission pulley system of the gasoline engine or gas engine body 6 includes a steering pump belt 25 and a steering pump pulley 26. The crankshaft pulley 23 and the steering pump pulley 26 are connected by the steering pump belt 25. The second-layer gear train is a steering pump gear train, and the steering pump belt 25 is tensioned with a belt made of elastic material. The second compressor solution can be flexibly supplemented to meet the needs of different car manufacturers.

[0033] The water pump belt 20 passes through the crankshaft pulley 23, the water pump pulley 21, the automatic tensioner assembly 3, the generator pulley 19, and the air conditioning compressor pulley 22 in sequence. The crankshaft pulley 23 is the driving pulley. The crankshaft pulley 23 and the air conditioning compressor pulley 22 are located at the bottom, the water pump pulley 21 is located in the middle, and the generator pulley 19 is located at the upper right end. The automatic tensioner assembly 3 is located between the water pump pulley 21 and the generator pulley 19, and is located on the inner side of the water pump belt 20, which is a positive transmission. By optimizing the position of the automatic tensioner pulley and the winding direction of the belt, it is ensured that the accessory wheel system pulley has a suitable wrap angle to achieve smooth operation of the engine wheel system and meet the transmission requirements of the accessories of each wheel system of the engine wheel system. Through a reasonable wheel system layout, the use of idler wheels is reduced, the mechanical loss of the engine front end wheel system is reduced, the engine power is increased, and the fuel consumption is reduced.

[0034] The automatic tensioner is used to tension the gear train, so that the gear train maintains reliable pre-tensioning force throughout its entire life cycle. There is no need to manually adjust the belt tension, which improves system reliability and reduces maintenance costs. The tensioning force is small and the force is evenly distributed, which reduces the shaft load on the belt and gear train accessories, extends the life of the gear train and maintenance cycle, improves the engine NVH performance, reduces the mechanical loss of the engine front end gear train, increases engine power and reduces fuel consumption.

[0035] In actual operation, fresh air enters the gasoline engine or gas engine body 6 through the inlet on the left side of the intake manifold 1, participates in combustion in the gasoline engine or gas engine body 6, and is discharged to the exhaust manifold 7, and is discharged to the outside through the exhaust duct of the whole vehicle. At the same time, the oil injected from the oil filling port cap 2 and stored in the oil pan 17 in advance is transported to the various moving parts in the gasoline engine or gas engine body 6 through the lubricating oil path inside the whole machine for lubrication and cooling, so as to ensure the normal operation of the whole machine. Through the right suspension 8 and the left suspension 13 connected by bolts on both sides, and the rear suspension 12 on the rear transmission, the whole machine can be conveniently and firmly connected to the bracket in the car cabin, and the circular shock-absorbing pad can play a good role in all-directional shock absorption. At the same time, in the front wheel system, the crankshaft pulley 23 serves as the power output end. When rotating, the water pump belt 20 tensioned by the automatic tensioning pulley assembly 24 drives the generator 19, the water pump pulley 21, and the air conditioning compressor 22 pulley to rotate together, and also drives the steering pump pulley 26 to operate normally through the steering pump belt 25.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An inverted horizontal gasoline or gas engine structure, comprising a gasoline or gas engine body (6), a valve cover (3), an intake manifold (1) and an EGR valve (4); characterized in that: The gasoline engine or gas engine body (6) is arranged at an inclined angle of α, the upper right side of the gasoline engine or gas engine body (6) is connected to the valve cover (3) by bolts, the upper side of the gasoline engine or gas engine body (6) is connected to the intake manifold (1) by bolts, a PCV hose (10) is connected between the PCV valve interface of the valve cover (3) and the PCV nozzle of the intake manifold (1), and an EGR valve (4) is arranged on the upper half of the gasoline engine or gas engine body (6) at an angle of β inclined to the left. The range of α is 40° to 60°, and the range of β is 35° to 45°; The inverted horizontal gasoline or gas engine structure further comprises an EGR pipe (11), a water outlet adapter seat (5) and a water outlet pipe assembly (15); a transverse EGR pipe (11) is arranged between the EGR valve (4) and the EGR inlet of the pressure stabilizing chamber (1-2) of the intake manifold (1); the EGR pipe (11) is arranged along the intake manifold (1) and the gasoline or gas engine body (6); a water outlet adapter seat (5) is arranged below the EGR pipe (11) at the rear end of the gasoline or gas engine body (6); and the water outlet pipe assembly (15) passes through the bottom of the intake manifold (1) and extends to the front end of the gasoline or gas engine body (6); A stainless steel exhaust manifold (7) is connected to the lower right side of a gasoline engine or gas engine body (6) by bolts. The exhaust manifold (7) comprises a collecting pipe (7-1), a rear flange (7-2), an oxygen sensor mounting seat (7-3), a front flange (7-4) and four branch pipes (7-5); the upper ends of the four branch pipes (7-5) are all connected to four air inlet holes provided on the front flange (7-4), the lower ends of the four branch pipes (7-5) are all connected to the collecting pipe (7-1), the exhaust port of the collecting pipe (7-1) is connected to the exhaust hole provided on the rear flange (7-2), the oxygen sensor mounting seat (7-3) is fixed to the upper end surface of the rear flange (7-2), and the lower ends of the four branch pipes (7-5) are all bent downward, and the bending direction is consistent.

2. The inverted horizontal gasoline engine or gas engine structure according to claim 1, characterized in that: The gasoline or gas engine body (6) is connected to an oil pan (17) at the lower left by bolts, the gasoline or gas engine body (6) is connected to a left suspension (13) at the left side between the intake manifold (1) and the oil pan (17) by bolts, the gasoline or gas engine body (6) is connected to a right suspension (8) at the right side between the exhaust manifold (7) and the oil pan (17) by bolts, and the gasoline or gas engine body (6) is connected to a rear suspension (12) on a transmission (16) at the rear by bolts.

3. The inverted horizontal gasoline engine or gas engine structure according to claim 2, characterized in that: The left suspension (13) is composed of a left suspension bracket assembly (13-1) and a left shock-absorbing pad assembly (14) pressed onto the left suspension bracket assembly (13-1); the right suspension (8) is composed of a right suspension bracket assembly (8-1) and a right shock-absorbing pad assembly (9) pressed onto the right suspension bracket assembly (8-1); and the rear suspension (12) is composed of a rear suspension bracket assembly (12-1) and a rear shock-absorbing pad assembly (12-2) pressed onto the rear suspension bracket assembly (12-1).

4. The inverted horizontal gasoline engine or gas engine structure according to claim 1, characterized in that: The first layer of the drive pulley system in front of the gasoline engine or gas engine body (6) comprises: a generator pulley (19), a water pump pulley (21), an air conditioner compressor pulley (22) and a crankshaft pulley (23) which are connected by a water pump belt (20), and an automatic tensioning pulley assembly (24) is used to tension the water pump belt (20).

5. The inverted horizontal gasoline engine or gas engine structure according to claim 4, characterized in that: The second layer of the drive pulley system of the gasoline engine or gas engine body (6) comprises a steering pump belt (25) and a steering pump pulley (26), and the crankshaft pulley (23) and the steering pump pulley (26) are connected in transmission via the steering pump belt (25).

6. The inverted horizontal gasoline engine or gas engine structure according to claim 1, characterized in that: The intake manifold (1) comprises an intake port (1-1), a pressure stabilizing chamber (1-2) and an intake duct (1-3); the intake port (1-1) is located at the rear end of the pressure stabilizing chamber (1-2); the intake duct (1-3) is located at the front side of the pressure stabilizing chamber (1-2) in a wave shape; four intake ducts (1-3) are connected to the intake port (1-1) and the outlet port (1-4); and an EGR mounting boss (1-5) is arranged on the left side of the pressure stabilizing chamber (1-2).

7. The inverted horizontal gasoline engine or gas engine structure according to claim 1, characterized in that: The oil filling port cover (2) of the valve chamber cover (3) is arranged at the highest point on the left side of the valve chamber cover (3).

Images