CN102877932A - Turbo supercharged engine - Google Patents

Abstract

The invention provides a turbo supercharged engine comprising a main motion system, an air distribution system, an air inlet/outlet system, a cooling system, a lubricating system, an igniting system, an electric spraying system, a crank box forced ventilation system and a gas evaporation and purification system. According to the technical scheme, an engine oil nozzle for a cooling piston is mounted on a main bearing base in an inclined direction; a manifold cushion exhaust port is formed by three layers of stainless steel boards with seams; a conical body wear-resistant material and a correspondingly arranged valve base wear-resistant working end face near an annular groove are arranged at the position of the edge of a conical valve sheet of a valve; an air cylinder body is fixedly arranged at the lower part of a main bearing cover; the main bearing cover is mounted on a reinforcing board on a boss; and a reinforcing board oil falling hole is reversed on the part, corresponding to the crank, of the reinforcing board. By utilizing an air inlet variable time correcting technology, the oil consumption of an engine is reduced; the piston cooling nozzle is mounted on the main bearing base of the air cylinder body; the air inlet amount is increased; the average effective pressure of the engine can be improved; the mechanical strength of related parts can be reinforced; and the power adaptability of the engine can be improved.

Description

a turbocharged engine

technical field

The invention belongs to the technical field of gasoline engines, in particular to a turbocharged engine. the

Background technique

Under the influence of national energy conservation and emission reduction policies, energy crisis and environmental protection, as an effective way to reduce vehicle fuel consumption, improve vehicle exhaust pollution, and improve engine power while saving energy and reducing emissions, this technology kills two birds with one stone-- - Turbocharged technology is gradually accepted by consumers, so it is imperative to develop turbocharged engines. In order to respond to the rapidly growing demand of the Chinese auto market and improve the commerciality of the company's products, a 1.5-liter small-displacement turbocharged gasoline engine with high performance, low fuel consumption and low pollution has been developed. the

Contents of the invention

The purpose of the present invention is to provide a turbocharged engine which adopts piston cooling oil nozzle, three-layer cylinder pad structure, increased valve wear resistance and continuously variable valve timing technology. the

The object of the present invention is achieved in that it includes a main motion system made up of an aluminum cylinder block, a cylinder head, a crankshaft, a crankshaft damping pulley, a piston, a piston pin, a piston ring, and a connecting rod assembly. Gas camshaft, intake and exhaust valves, V.V.T. wheel assembly, oil control valve, timing chain and sprocket, crankshaft timing sprocket, tappet, valve spring, valve spring lock clip, valve spring upper and lower seat, valve The variable valve timing air distribution system composed of oil seals consists of resin intake manifold assembly, cast iron exhaust manifold, turbocharger, air compressor inlet and outlet ports, supercharger water pipe assembly, supercharger Inlet and exhaust system composed of lubricating oil pipe and oil return pipe assembly, cooling system composed of water inlet interface, water pump, sprocket housing assembly, engine block, water jacket in cylinder head, thermostat, and water outlet pipe, composed of Lubrication system composed of oil pan, oil filter, sprocket housing assembly, oil filter and oil passage in the body, ignition system composed of spark plug, ignition coil, generator, crankshaft angle sensor, camshaft position Sensor, fuel distribution pipe assembly, electronic throttle, knock sensor, intake air temperature and pressure sensor, water temperature sensor composed of EFI system, crankcase forced ventilation system composed of P.C.V valve, resin cylinder head cover and carbon canister The fuel evaporation and purification system composed of solenoid valves and connecting pipelines is characterized by: an oil nozzle for cooling the piston is installed on the oblique direction of the main bearing seat of the aluminum cylinder block; The two sides of the middle stainless steel plate are respectively provided with a stainless steel plate with a slit structure, the end of the stainless steel plate close to the ring edge is vertically flush with the exhaust port of the manifold, and the other end is fixed in the middle of the exhaust manifold pad layer of stainless steel plate; there is an annular groove at the edge of the conical valve plate of the intake valve or/and exhaust valve, and a cone wear-resistant material is surfacing inside the annular groove; the valve near the annular groove There is an annular groove at the working end of the seat, and a layer of wear-resistant working end surface of the valve seat corresponding to the annular groove is sintered in the annular groove; a reinforcing plate is arranged at the lower part of the main bearing cover, and the reinforcing plate is fixed on the cylinder by mounting bolts. body and the main bearing cap are installed on the boss; there is also an oil drop hole for the reinforcement plate at the position corresponding to the crankshaft. the

The air intake of this structure adopts a continuously variable valve timing mechanism. the

This structure adopts the straight-type tappet structure in which the valve is directly driven by the camshaft. the

The reinforcing plate is fixed on the cylinder body installation boss through the third, fourth and fifth main bearing caps; Main bearing cap boss. the

The camshaft driving method of this structure adopts roller chain transmission, and an automatic tensioner is used to tighten the chain. the

The length of the slot structure at the edge of the exhaust port of the manifold is 1.5-3 mm, and the width of the slot structure is 0.45-0.7 mm. The outer surface of the stainless steel plate near the annular edge of the exhaust port of the manifold is also coated with an aluminum-silver paste heat-resistant coating. The width of the aluminum-silver paste heat-resistant coating is 3-7 mm and the thickness is 0.02-0.04 mm. the

The wear-resistant material of the cone is: hard alloy, cobalt-based alloy, nickel-based alloy or cobalt-chromium alloy; the sintered material of the wear-resistant working end face of the valve seat is: cast iron, iron-molybdenum alloy, iron-molybdenum-silicon alloy or vanadium silicon alloy. the

The advantages of the present invention are:

The engine of the invention has the advantages of adopting advanced gasoline engine turbocharging technology, and having the performances of small size, light weight, high performance, low fuel consumption and high environmental protection. Specific technical features:

1. Adopt aluminum cylinder block and resin parts, highly integrated aluminum sprocket housing assembly, light weight;

2. The gas distribution mechanism adopts single-cylinder 4-valve, double overhead hollow camshafts, direct driving tappets, and continuously variable valve timing technology;

3. Aluminum cylinder block and cast iron cylinder liner are adopted, and the cylinder liner is directly pre-cast in the cylinder block;

4. Cylinder head gasket with three-layer metal structure;

5. The camshaft driving method adopts roller chain transmission, and the automatic tensioner is used to tighten the chain;

6. Adopt the design and manufacturing technology of the broken connecting rod;

7. Adopt exhaust gas turbocharging technology;

8. Emissions can adapt to Euro IV and Euro V;

Due to the variable intake timing technology, the fuel economy of the engine has been improved. In order to reduce the heat load intensity of the piston, a piston cooling nozzle is installed on the main bearing seat of the cylinder block, and under a certain oil pressure, the oil is sprayed onto the surface of the piston inner cavity to cool the piston. Due to the increase of intake air volume, the average effective pressure of the engine has increased, and the mechanical strength of related parts has been reinforced to adapt to the improvement of engine power. The invention also has the advantages of simple and reasonable structure, low cost, long service life, safety and reliability. the

Description of drawings

Figure 1 is a schematic diagram of a partial cross-sectional structure of the present invention;

Fig. 2 is a schematic diagram of the cross-sectional structure of the ladder on the left side of Fig. 1;

Fig. 3 is a schematic diagram of B-B cross-sectional structure in Fig. 2;

Fig. 4 is a schematic diagram of an enlarged structure in direction A in Fig. 2;

Fig. 5 is a schematic diagram of the front view structure of Fig. 1;

Fig. 6 is a schematic structural diagram of the right view of Fig. 1;

Fig. 7 is a schematic diagram of a partial cross-sectional structure of Fig. 1;

Fig. 8 is a schematic structural diagram of the turbocharger and related parts in Fig. 1;

Fig. 9 is a schematic structural diagram of the front view of the sprocket housing assembly in Fig. 1;

Fig. 10 is a schematic structural diagram of the rear view of the sprocket housing assembly in Fig. 1;

Fig. 11 is a schematic diagram of a D-D sectional structure in Fig. 10;

Fig. 12 is a schematic diagram of the C-C sectional structure in Fig. 10;

Fig. 13 is a schematic diagram of the installation and cooperation structure of the reinforcing plate in Fig. 1;

Fig. 14 is a schematic diagram of the structure of the exhaust manifold pad in Fig. 1;

Fig. 15 is a schematic diagram of the E-E cross-sectional structure in Fig. 14;

Fig. 16 is a schematic structural diagram of the intake valve seat, exhaust valve seat, intake valve and exhaust valve in Fig. 1;

Figure 17 is a top view of Figure 16;

Fig. 18 is a schematic diagram of the cooperation structure of the cylinder head, intake valve and intake valve seat, exhaust valve and exhaust valve seat in Fig. 1;

Fig. 19 is a schematic diagram of the installation and cooperation structure of the starter in Fig. 1;

Fig. 20 is a schematic diagram of the F-F sectional structure in Fig. 19;

Fig. 21 is a schematic structural diagram of the flywheel assembly in Fig. 1;

Fig. 22 is a schematic diagram of the G-G cross-sectional structure in Fig. 21;

Fig. 23 is a graph of performance index and external characteristic of the example of the present invention.

Explanation of the symbols of the main parts of the drawings

1-Ignition coil; 2-Resin cylinder head cover, 3-Fuel distribution pipe assembly, 4-Intake air temperature and pressure sensor, 5-Carbon tank solenoid valve, 6-Carbon tank solenoid valve connecting pipeline, 7-Electronic section Valve, 8-piston pin, 9-connecting rod assembly, 10-crankshaft, 11-connecting rod bearing, 12-flywheel assembly, 13-oil pan, 14-oil filter, 15-crankshaft damping pulley, 16-piston , 17- cylinder block, 18- cylinder liner, 19- cylinder head, 20- sprocket housing assembly, 21- spark plug, 22- resin intake manifold assembly, 23- oil filter, 24- piston cooling Nozzle, 25-turbocharger, 26-exhaust manifold gasket, 27-cast iron exhaust manifold, 28-intake camshaft, 29-intake valve, 30-exhaust valve, 31-valve spring lower seat , 32-valve oil seal, 33-valve spring, 34-valve spring lock clip, 35-valve spring upper seat, 36-exhaust camshaft, 37-straight tappet, 38-camshaft position sensor, 39-crankshaft angle Sensor, 40-water pump, 41-water inlet port, 42-generator, 43-oil control valve, 44-P.C.V valve, 45-water outlet connection, 46-water temperature sensor, 47-small circulation pipe, 48-air outlet port, 49 -Compressor inlet port, 50-piston ring, 51-thermostat, 52-guide chain rod assembly, 53-crankshaft timing sprocket, 54-tensioner rod assembly, 55-timing chain, 56-positive Timing chain tensioner, 57-camshaft sprocket, 58-V.V.T. wheel assembly, 59-supercharger lubricating oil pipe, 60-oil return pipe assembly, 61-supercharger water pipe assembly, 62-rear oil seal cover, 63-reinforcement Plate, 64-reinforcing plate fixing bolt, 65-intake valve seat, 66-exhaust valve seat, 67-starter, 68-oil filter bracket.

The present invention will be described in further detail below in conjunction with accompanying drawing by example, but following example is only example wherein of the present invention, does not represent the limited right protection scope of the present invention, and the right protection scope of the present invention is defined in the claims prevail. the

Detailed ways

Example 1

As shown in Figures 1 to 22, 17 in the figure is the cylinder block, 19 is the cylinder head, the crankshaft is 10, the crankshaft damping pulley 15, the piston 16, the piston ring 50, the piston pin 8, the connecting rod assembly 9, the connecting rod bearing 11 and flywheel assembly 12, the main motion system composed of rear oil seal cover 62; by intake camshaft 28, exhaust camshaft 36, intake valve 29, exhaust valve 30, V.V.T. wheel assembly 58, oil control valve 43, positive Timing chain 55, camshaft sprocket 57, crankshaft timing sprocket 53, timing chain tensioner 56, tensioner rod assembly 54, guide chain rod assembly 52, straight tappet 37, valve spring 33, valve Variable valve timing air distribution system composed of spring lock clip 34, valve spring upper seat 35, valve spring lower seat 31, and valve oil seal 32; intake manifold assembly 22 made of resin, cast iron exhaust manifold 27, turbocharger Compressor 25, compressor inlet port 49, air outlet port 48, supercharger water pipe assembly 61, supercharger lubricating oil pipe 59, oil return pipe assembly 60 form the intake and exhaust system; by water inlet port 41, water pump 40, The cooling system composed of the sprocket housing assembly 20, the water jacket in the cylinder block, the water jacket in the cylinder head, the thermostat 51, the water outlet pipe 45, and the small circulation pipe 47; consists of the oil pan 13, the oil filter 14, The lubrication system composed of the sprocket housing assembly 20, the oil filter 23 and the oil passage in the body; the ignition system composed of the spark plug 21, the ignition coil 1, and the generator 42; the crankshaft angle sensor 39 and the camshaft position sensor 38 , fuel distribution pipe assembly 3, electronic throttle valve 7, knock sensor, intake air temperature and pressure sensor 4, water temperature sensor 46 composed of EFI system; and crankcase forced by P.C.V valve 44 and resin cylinder cover 2 Ventilation system; a fuel evaporation purification system composed of carbon canister solenoid valve 5 and connecting pipeline 6.

The oil nozzles 24 used for cooling the piston are installed on the oblique direction of the main bearing seat of the aluminum cylinder block, and are respectively installed on the main bearing seats of cylinder blocks 1 to 4; The two sides of the steel plate 26-02 are respectively provided with a stainless steel plate 26-01 and 26-03 with a gap structure. The end of the stainless steel plate near the annular edge is vertically flush with the exhaust port of the manifold, while the other end is fixed On the stainless steel plate 26-02 in the middle layer of the exhaust manifold pad; there is an annular groove at the edge of the conical valve plate of the intake valve or/and exhaust valve, and a cone-shaped resistance is surfacing inside the annular groove. There is an annular groove at the working end of the valve seat close to the annular groove, and a layer of wear-resistant working end face of the valve seat corresponding to the annular groove is welded in the annular groove; a reinforcing plate is arranged at the lower part of the main bearing cover, The reinforcing plate is fixedly arranged on the cylinder block and the main bearing cover installation boss through mounting bolts; there is also an oil drop hole for the reinforcing plate at the position corresponding to the crankshaft. the

The engine has a displacement of 1.499 liters, a bore of 75mm, a stroke of 84.8mm, and a center distance of 83mm. The cylinder body is made of special aluminum alloy material, and the four steel sleeves and the aluminum alloy cylinder body are cast as a whole through low-pressure centrifugal casting technology. A piston cooling nozzle is installed obliquely above the main bearing seat of the cylinder block to forcibly cool the piston. the

The cylinder head adopts advanced roof-shaped combustion chamber, small angle valve configuration, double overhead camshaft, and four-valve structure. The intake and exhaust camshafts directly drive the valves through the straight tappets, eliminating the need for rocker arms, rocker shafts and hydraulic tappet parts, which embodies the advantages of small size, light weight and low cost. the

A rocker chamber cover made of resin is arranged on the upper end of the cylinder head, on which four independent ignition coils 1 are installed, and four spark plugs 21 are independently controlled respectively. the

To meet the needs of the harsh working conditions of the supercharged engine, the piston, piston pin, connecting rod and other parts have been specially strengthened. To reduce frictional loss, a resin coating is printed on the surface of the piston skirt. the

The crankshaft drives the intake and exhaust camshafts through the crankshaft timing sprocket 53 and timing chain 55 and the V.V.T wheel assembly 58 installed at the front end of the intake camshaft and the camshaft sprocket 57 installed at the front end of the exhaust camshaft. An automatic tensioner 56 and a tensioner rod assembly 54 are arranged on the left side of the timing chain 55, and a guide chain rod assembly 52 is arranged on the right side, which ensures that the timing chain is always in a tensioned working state. The computer control unit (ECU) adjusts the oil pressure entering the V.V.T wheel assembly by controlling the operating frequency of the oil control valve 43 (O.C.V valve) according to the engine operating condition signals provided by the crankshaft angle sensor 39 and the camshaft position sensor 38 , thus changing the timing of the intake camshaft to achieve the best working condition of the engine. the

In front of the timing chain is a multifunctional aluminum sprocket housing assembly 20, which integrates an oil pump, a lubricating oil circuit, an engine support and a water pump water circuit, and realizes multifunctional miniaturization and light weight. The oil pump drive gear on the crankshaft directly drives the inner rotor of the oil pump, and the inner rotor drives the outer rotor to rotate, so that the oil in the cavity between the inner and outer rotors is squeezed out and enters the main oil passage of the cylinder block to ensure oil supply at all times. the

As shown in Figure 8, 20-02 is an oil pump cover, 20-03 is an inner rotor, 20-05 is an outer rotor, and 20-04 is an oil seal. 20-06 is a pressure relief spring, 20-07 is a screw plug, and 20-08 is a pressure relief plug. When the oil pressure in the main oil passage exceeds the limit value, part of the oil will be released through the pressure relief plug. 20-01 is a double-ended stud, which is installed on the sprocket housing and connects the engine with the front suspension of the whole vehicle. the

A two-stage crankshaft damping pulley 15 is arranged at the front end of the crankshaft. The one near the engine side is used to drive the water pump 40, the generator 42 and the air-conditioning compressor, and the one outside is used to drive the power steering pump. In addition, a water outlet connecting pipe 45, a water temperature sensor 46, a throttle heating water outlet pipe and a warm air inlet pipe are installed on the rear end surface of the cylinder head. On the left side of the engine (viewed from the rear end of the engine), a resin intake manifold 22, an electronic throttle body 7 and a fuel rail are arranged. An exhaust manifold 27 and a turbocharger 25 are arranged on the right side of the engine. As shown in Figure 8, 25-01 is the volute of the turbocharger, 25-02 is the pressure casing, 25-03 is the intermediate body, and 25-04 is the actuator. the

A resin water inlet port 41 is arranged at the left front of the cylinder block, a thermostat 51 is installed at the water inlet of the cylinder block, and a small circulation pipe 47 shares a water pipe with the warm air return pipe, and directly enters the water inlet of the cylinder block. the

A single main bearing cap is installed on the main bearing seat of the cylinder block, which are the first main bearing cap 17-01, the second main bearing cap 17-02, the third main bearing cap 17-03, and the fourth main bearing cap 17-04 and fifth main bearing cap 17-05. In order to improve the rigidity of the crankcase skirt and the main bearing cap and reduce the vibration and noise of the engine, a reinforcing plate 63 is installed at the bottom of the cylinder block. Use seven reinforcement plate fixing bolts 64 to respectively fix the reinforcement plates in the threaded holes on the bottom surface of the cylinder block and the third main bearing cap 17-03, the fourth main bearing cap 17-04, and the fifth main bearing cap 17-05 boss thread inside the hole. the

The starter 67 is fixed on the end of the cylinder block where the starter is installed from the inside of the engine, and a flywheel annular avoidance groove 12-03 that avoids interference with the starter when it is actuated is also provided on the side of the flywheel 12-01; 67 is installed on the oil filter bracket 68 at the position where the starter is installed on the cylinder block, and an oil filter bracket wiper structure 68-01 is also provided to facilitate the installation of the starter; the groove width of the flywheel annular avoidance groove is 3-5mm , Groove depth of 4 ~ 6mm. Since the starter 67 is fixed on the end face of the cylinder block where the starter is installed from the inside of the engine, the starter pinion and the flywheel ring gear 12-02 are meshed during starting. An annular avoidance groove 12-03 is processed on the side end surface of the cylinder block. Since the starter is close to the oil filter bracket 68, in order to avoid interference between the two when installing the starter, the oil filter bracket is designed with a slanted structure 68-01. the

Because the exhaust gas temperature and pressure of the turbocharged engine are all high, if the exhaust manifold pad 26 made of traditional upper and lower layers of stainless steel plates is adopted, due to manufacturing and welding errors, the upper and lower layers of pads at the exhaust port The sealing ribs cannot be completely overlapped, which will cause the dislocation of the ribs, resulting in the loss of the elastic force of the ribs. Under the action of high temperature and high pressure gas, it will cause air leakage in the exhaust manifold. Therefore, the design adopts a three-layer exhaust Air manifold gasket 26. Its structure is the upper stainless steel plate 26-01, the middle stainless steel plate 26-02 and the lower stainless steel plate 26-03. A stainless steel plate 26-01 and 26-03 with a slit structure are respectively arranged on both sides of the annular edge of the manifold exhaust port, and the end of the stainless steel plate near the annular edge is vertically flush with the manifold exhaust port , while the other end is fixedly welded on the middle stainless steel plate 26-02. The heat-resistant coating of aluminum-silver paste is also coated within a certain width range on the circular edge of the exhaust port on the outer surface of the upper and lower stainless steel plates of the exhaust manifold pad to ensure reliable sealing of the sealing tape. the

Due to the increased thermal load of the turbocharged engine, in order to improve the wear resistance of the valve and the valve seat, the structure of the matching part of the valve and the valve seat has been improved. The valve of the present invention includes: an intake valve and an exhaust valve, and the valve seat includes: an intake valve seat and an exhaust valve seat. Use welding technology to complete local structural changes and enhance local strength. Since the following intake valve and exhaust valve have the same structure, and the intake valve seat and exhaust valve seat have the same structure, the intake valve and intake valve seat are taken as examples for illustration. the

The intake valve seat ring 65 is embedded in the intake port of the cylinder head intake port 19-02, and the seat side alloy 65-01 and the non-seat side alloy 65-02 are sintered together at high temperature to form a wear-resistant valve seat. end face. The part that cooperates with the intake valve 29 is alloy 65-01 on the seat side, and adopts wear-resistant materials. An annular groove is arranged at the edge of the conical valve plate of the intake valve 29, and a cone wear-resistant material 29-01 is surfacing inside the annular groove; an annular groove is arranged at the working end of the valve seat close to the annular groove, A layer of wear-resistant working end face of the valve seat corresponding to the cone wear-resistant material 30-01 in the annular groove is sintered in the annular groove. The exhaust valve seat ring 66 is inlaid at the exhaust outlet end of the cylinder head exhaust port 19-01, and is also sintered together by seat-side alloy 66-01 and non-seat-side alloy 66-02 at high temperature. The part that cooperates with the exhaust valve 30 is alloy 66-01 on the seat side, and wear-resistant materials are also used to form the wear-resistant working end face of the valve seat. An annular groove is provided at the edge of the conical valve plate of the exhaust valve 30, and a cone wear-resistant material 30-01 is surfacing inside the annular groove. the

The wear-resistant material of the cone is: hard alloy, cobalt-based alloy, nickel-based alloy or cobalt-chromium alloy; the sintered material of the wear-resistant working end face of the valve seat is: cast iron, iron-molybdenum alloy, iron-molybdenum-silicon alloy or vanadium silicon alloy. the

The multi-point EFI exhaust gas turbocharged engine of the present invention is a four-stroke gasoline engine, and its working cycle includes four piston strokes, namely intake stroke, compression stroke, expansion stroke (power stroke) and exhaust stroke. the

During the intake stroke, the intake valve opens, the piston moves downward from the top dead center, and the air pressurized by the compressor enters the intake port of the cylinder head through the intercooler, electronic throttle valve and intake manifold, and the computer controls The unit (ECU) controls the opening of the fuel injector, injects fuel into the intake port, and mixes it with air, and the mixed combustible gas enters the cylinder from the two intake valves.

After the piston has passed the bottom dead center, the intake and exhaust valves are all closed, and the crankshaft pushes the piston to move to the top dead center, entering the compression stroke, and the combustible mixture entering the cylinder body is compressed. the

Before the end of the compression stroke, when the piston runs close to the top dead center, the ECU controls the ignition coil to make the spark plug emit electric sparks, igniting the compressed combustible mixture, and the high-temperature and high-pressure combustible mixture burns and expands, pushing the piston from the top dead center to the bottom stop Point movement, the crankshaft rotates through the connecting rod and outputs mechanical energy, which is the expansion process. the

When the expansion is close to the end, the exhaust valve is opened, and the exhaust gas is freely exhausted by the pressure of the exhaust gas. When the piston reaches the bottom dead center and then runs to the top dead center, the exhaust gas will continue to be forced out of the combustion chamber, enter the exhaust passage, and then enter the exhaust gas. Manifold and turbocharger, and finally discharged from the exhaust pipe of the whole vehicle. the

Through the above-mentioned working cycle process, the engine completes the conversion from thermal energy to mechanical energy, from the up and down reciprocating motion of the piston to the rotational motion of the crankshaft, thus outputting power. the

Because the engine adopts exhaust gas turbocharging technology, during the exhaust process, the exhaust gas discharged from the exhaust manifold enters the turbocharger volute, and the energy of the exhaust gas drives the turbine to rotate, and the intermediate body drives the supercharger to rotate. The compressor works, and after the air enters the compressor, it is compressed and boosted by the compressor, and then delivered to the intake system. the

Due to the use of a turbocharger, the flow rate of the combustible mixture entering the cylinder increases, and the temperature and pressure of the mixture at the end of the compression stroke also increase. In order to avoid engine knocking, the compression ratio is properly adjusted during engine design. adjustment. Since the load on the moving parts increases after pressurization, the design of the corresponding moving parts is strengthened, and the piston is forced to cool with cooling nozzles. the

Claims (10)

1. turbosupercharged engine, it includes by aluminium block, cylinder head, bent axle, shock-proof crank pulley, piston, wrist pin, piston ring, the main motion system that connecting rod ASSY forms, by advancing, exhaust cam shaft, advance, exhaust valve, V.V.T. wheel assembly, OCV Oil Control Valve, timing chain and sprocket wheel, crankshaft timing sprocket, tappet, valve spring, the valve spring locker, on the valve spring, lower seat, the gas distribution system of the Variable Valve Time that valve oil seal forms, by the resin inlet manifold assembly, cast-iron exhaust manifold, turbosupercharger, aerostatic press advances, outgoing interface, the pressurized machine conduit assembly, the pressurized machine lubricant pipe, what oil return pipe component formed advances, vent systems, by the water inlet interface, water pump, sprocket wheel chamber shell component, engine cylinder-body, water jacket in the cylinder cap, thermostat, the cooling system that outlet pipe forms, by oil sump, sump strainer, sprocket wheel chamber shell component, the lubrication system that oil duct in oil filter and the body forms, by spark plug, spark coil, the ignition system that generator forms, by crankshaft angle sensor, CMPS Camshaft Position Sensor, the fuel distribution pipe assembly, electronic throttle, detonation sensor, air inlet temperature/pressure sensor, the electric injection system that cooling-water temperature sensor forms and by the P.C.V valve, the PCV system that resin cylinder head cover forms and by the fuel evaporation cleaning system that Valve EGR and connecting pipeline form, it is characterized in that: the tilted direction on the aluminium block main bearing seat is equipped with the oil injection nozzle that cooling piston is used; Both sides at the mesosphere, annular edge of manifold pad relief opening stainless-steel sheet are respectively arranged with a stainless-steel sheet with gap structure, this stainless-steel sheet is near end and the manifold exhaust mouth vertical level of annular edge, and the other end then is fixed on the stainless-steel sheet of exhaust manifold pad mesosphere; Or/and the taper valve block edge of exhaust valve is provided with an annular groove, in the built-up welding of the inside of annular groove the cone high-abrasive material is arranged at intake valve; Be provided with a circular groove in the valve seat working end near annular groove, sintering has the wear-resisting operative end surface of one deck valve seat corresponding with annular groove in circular groove; Be provided with a stiffening plate in the bottom of main bearing cap, this stiffening plate is fixedly installed on cylinder block and the main bearing cap installation base by construction bolt; On the stiffening plate position corresponding with bent axle, also leave the stiffening plate oilhole that falls.

2. turbosupercharged engine according to claim 1 is characterized in that: air inlet employing CVTC.

3. turbosupercharged engine according to claim 1 is characterized in that: adopt the direct lighting type prop column structure that is directly driven valve by camshaft.

4. turbosupercharged engine according to claim 1, it is characterized in that: described stiffening plate is fixed on the cylinder block installation base by the 3rd, the 4th, the 5th main bearing cap; On the 3rd, the 4th, the 5th main bearing cap, be provided with the main bearing cap boss of fixing spacing stiffening plate.

5. turbosupercharged engine according to claim 1, it is characterized in that: the camshaft actuated mode adopts roller chain drives, and adopts automatic tension device tensioner chain.

6. turbosupercharged engine according to claim 1, it is characterized in that: the length of the gap structure of described manifold exhaust mouth edge is 1.5～3 millimeters, and the width of gap structure is 0.45～0.7 millimeter.

7. according to claim 1 or 6 described turbosupercharged engines, it is characterized in that: also scribble the aluminium-silver slurry refractory coating near on the stainless-steel sheet outer surface of manifold exhaust choma shape edge, the width of aluminium-silver slurry refractory coating is 3～7 millimeters, and thickness is 0.02～0.04 millimeter.

8. turbosupercharged engine according to claim 1, it is characterized in that: described cone high-abrasive material is: cemented carbide, cobalt base alloy, nickel-base alloy or cochrome; The agglomerated material of the wear-resisting operative end surface of described valve seat is: cast iron, ferromolybdenum, iron molybdenum-silicon alloy or vanadium-silicon alloy.

9. turbosupercharged engine according to claim 1 is characterized in that: described starter motor is fixed on cylinder block installs on the dynastart end from the motor inboard, also be provided with a flywheel annular of avoiding interfering during with the starter motor start in the side of flywheel and dodge groove.

10. turbosupercharged engine according to claim 9 is characterized in that: install on the Oil Filter Bracket of dynastart end position being installed to cylinder block near starter motor, also be provided with an Oil Filter Bracket of being convenient to install starter motor and smear biassed fabric; The groove width that the flywheel annular is dodged groove is 3～5mm, and groove depth is 4～6mm.

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