Summary of the invention
The purpose of this invention is to provide a kind of layout pattern horizontal, front wheel driving that adopts, the novel turbosupercharged engine of cold supercharging in the band, multiple spot electronic fuel injection gasoline.
The object of the present invention is achieved like this: it includes cylinder block, lower body, cylinder cap and upper machine body, by bent axle, connecting rod ASSY, connecting rod bearing shell, piston, the bent machine system that wrist pin is formed, by advancing, exhaust cam shaft, advance, exhaust valve; rocking arm; hydraulic tappet; valve spring; pin folder; spring seat; the gas distribution system that valve oil seal is formed; by inlet manifold assembly; gas exhaust manifold; pressurized machine; what catalytic converter assembly was formed advances; vent systems; by intake pipe; water pump oil strainer module; engine cylinder-body; water jacket in the cylinder cap; thermoregulator assembly; the cooling system that outlet pipe is formed; by the food tray shell; sump strainer; oil pump; the lubrication system that the oil duct in water pump oil strainer module and the body is formed; by electric spraying control unit; sensor; engine wiring harness; oily rail assembly; generator; spark plug cover plate assembly; the motor multipoint fuel electrospray control system that spark plug is formed; and PCV system and fuel evaporation cleaning system; it is characterized in that: the lower body of aluminum alloy is provided with an oil pump housing that is structure as a whole with lower body, also is equipped with piston is forced the nozzle that cools off on cylinder block; Designing between each main shaft at the inlet and outlet camshaft has the semicircle concavity structure of abdicating requisite space to cylinder bolt; Be furnished with cyclinder head cover and whole spark coil and spark plug cover plate in the upper end of upper machine body; On Aluminum Alloy Cylinder Barrel, cylinder head, be cast with oil duct.
The advantage of motor of the present invention: this 1.8T motor is a have four valves, EFI, turbosupercharging petrol engine.This motor has merged many modern motor advanced technologies in design, mainly comprise many Valves Technology, petrol engine turbocharging technology, multipoint fuel electrospray technology and adopt technology such as roller rocker arms, hydraulic tappet, aluminium alloy cylinder, have that volume is little, power character, good economy performance, low, the reliability advantages of higher of discharging, reach present advanced international standard.Have following technical characterstic:
1, the full aluminum substrate motor of compact high-performance;
2, adopt electronic control multi-point sequent fuel injection technology;
3, distribution device adopts single cylinder 4 valves, Dual Over Head Camshaft and hydraulic tappet technology;
4, refrigeration technique in exhaust gas turbocharge and the air inlet;
5, the triple mode catalytic converter that closely is coupled;
6, adopt cylinder block, the direct foundry engieering of cylinder head oil duct, oil duct does not need to carry out secondary mechanical processing;
7, adopt cast iron cylinder cover, the direct precasting of cylinder sleeve is in cylinder block;
8, Europe IV laws and regulations requirement is satisfied in discharging;
Embodiment
Example 1
Shown in Fig. 1~3,5 among the figure be cylinder block, 6 for lower body, 4 for cylinder head, 2 for upper machine body, and the bent machine system that forms by bent axle 19, connecting rod 16 assemblies, connecting rod bearing shell 17, piston 14, wrist pin 15; By admission cam shaft 25, exhaust cam shaft 26, intake valve 22, exhaust valve 30, rocking arm 27, hydraulic tappet 28, valve spring 21, valve pin folder 23, cotter seat 20, the gas distribution system that valve oil seal assembly 29 is formed, the inlet and exhaust system of forming by inlet manifold assembly 41, gas exhaust manifold 42, pressurized machine 43, catalytic converter assembly 40; By intake pipe 48, water pump oil strainer module, engine cylinder 5, head gasket 4, water jacket in the cylinder cap, thermoregulator assembly 13, the cooling system that outlet pipe 47 is formed, by the food tray housing assy, sump strainer 45, oil pump 44, the lubrication system that oil duct in water pump oil strainer module 24 and the body is formed, by electronic control unit (ECU), sensor, engine wiring harness, oil rail assembly 46, generator 36, spark plug cover plate assembly 11, the motor multipoint fuel electrospray control system that spark plug 10 is formed, and PCV system and fuel evaporation cleaning system, it is characterized in that: the lower body of aluminum alloy is provided with an oil pump housing 44 that is structure as a whole with lower body 6, also is equipped with piston is forced the piston cooling nozzle 7 that cools off on lower body; Design has the semicircle concavity structure of abdicating requisite space to cylinder bolt between each main shaft of inlet and outlet camshaft; Be furnished with cyclinder head cover and whole spark coil and spark plug cover plate in the upper end of upper machine body; On Aluminum Alloy Cylinder Barrel, cylinder head, be cast with oil duct.
In addition, 1 among the figure is the chain gear chamber cover assembly, and 3 is cylinder head, 7 is piston cooling nozzle, and 8 is damper pulley, and 9 is oil pan assembly, 12 is the cyclinder head cover assembly, and 13 is the thermoregulator assembly, and 18 is the drive plate assembly, 24 is water pump oil strainer module, and 31 is poly Vbelt, and 32 is engine mounting assembly, 33 is that CRC idle pulley assembly 34 is power steering pump, and 35 is FEAD idle pulley assembly, and 37 is Idle wheel, 38 is exhaust manifold thermal shield, and 39 is air condition compressor, and 49 is cylinder liner.
1.8T the motor employing is horizontal, the layout pattern of front wheel driving, is cold supercharging in a 4 cylinders in upright arrangement, 4 valves, water-cooled, the band, multiple spot electronic fuel injection petrol engine.
This engine displacement is 1.793L, and cylinder diameter is 81mm, and stroke is 87mm, and cylinder core distance is 92mm.Cylinder body adopts the aluminum alloy borrow, and by high-caliber foundry engieering, four steel bushings are cast an integral body with aluminium alloy cylinder, and the main oil gallery of cylinder body and for the oblique oil duct of crankshaft bearing fuel feeding all is the once-through of employing forging type has reduced the workload that machine adds.
This motor has adopted the main bearing cap of five splits, simultaneously, for reducing the casting difficulty of cylinder body, below cylinder body, has designed the lower body of aluminum alloy, is connected with the food tray shell with cylinder body.The organic oil pump of design arrangement, oil gauge pipe and sump strainer etc. on lower body.Oil pump by chain and sprocket wheel transferring power, has guaranteed the machine oil supply that engine high pressure is stable by bent axle effectively.Piston cooling nozzle also is housed on lower body in addition, piston is forced cooling.
Cylinder cap adopts the hemispherical combustion chamber, and the structural configuration of Dual Over Head Camshaft and four valves has directly cast out two longitudinal high-pressure oil ducts on the cylinder cap, be used for to hydraulic pressure tappet fuel feeding.What rocking arm adopted is stamping forming roller rocker arms, is acted directly on the roller rocker arms by the intake and exhaust cam axle, drives valve opening by rocking arm again.Arranged upper machine body above the cylinder cap, upper machine body has the whole intake and exhaust cam bearing seat of honour.In the 6th the camshaft bearing (motor rear side) of upper machine body, gluing is poor to extend to the bearing support upper-end surface, and this structure helps the sealing of cylinder cap rear end.The intake and exhaust cam axle designs between each main shaft semicircular concavity structure, this structure is abdicated necessary space to cylinder bolt, when its advantage is to decompose cylinder cap, can not decompose camshaft, cylinder cap and upper machine body assembly are done as a wholely to decompose from cylinder body.
Because be supercharged engine, parts such as firing chamber, piston, connecting rod, bent axle have all been passed through special enhancement process.Piston face has passed through the phosphatization processing, and the skirt section has been coated with one deck graphite.
Cylinder cap upper machine body upper end is furnished with cyclinder head cover and whole spark coil and cover plate assembly, and each spark plug is by an independent spark coil control.
Transmission between bent axle and the camshaft is to realize by the timing chain that is installed in active timing sprocket and driven timing sprocket.The left side of chain is furnished with movable means for belt tension, carries out tensioner by tension device, and chain top and right side are furnished with upper rail and side rails.The chain outside is the chain You Shigai of an integral body, and covers in the chain grease chamber and to be furnished with crankcase oils air cooling radiator cooler.Adopt chain transmission and chain grease chamber to cover this structure, make the motor head axial dimension obtain effective compression, and then reduced the overall size of motor on the whole.
The motor peripheral accessory is arranged very compact, at the cylinder body exhaust side, designed an accessory mount, arranged power assistance pump for steering from top to bottom, generator and air condition compressor, arranged water pump in the air inlet side, arranged damper pulley at crankshaft front end, by a poly Vbelt transferring power, simultaneously in order to reduce the cornerite of poly Vbelt, guarantee belt tension, design arrangement two idle pulleys and an expansion tightening wheel.Water pump, oil strainer are designed to one, and design organic oil cooling unit, and with water pump, oil strainer and three kinds of functions of machine oil cooling have been carried out integrated.In addition, be furnished with the outlet of thermoregulator assembly and return pipe in the cylinder cap rear end, arranged intake pipe in the air inlet side, intake manifold, throttle valve body, fuel injection apparatuss etc. are furnished with gas exhaust manifold at exhaust side, turbosupercharger and three-way catalytic converter.
In addition, motor is reserved for further technology upgrading and improvement on structural design and layout, comprises direct fuel injection technology, variable air inlet technology, Variable Valve Timing and the full changeable air valve technology of electronic control in the cylinder.
Many valves of multiple spot electronic fuel injection exhaust gas turbocharge petrol engine of the present invention, its actual working procedure by following system circulate continuously the institute form, actual cycle can be divided into five processes, is respectively intake process, compression process, combustion process, expansion (acting) process and exhaust process.
In intake process, piston is moved downwards by top dead center, this moment, intake valve was opened, enter the intake duct of cylinder cap through throttle valve body, intake manifold through the air after the compressor boost, fuel oil by electronic control unit (ECU) control from the nozzle ejection of oily rail to intake duct, and and air mixing, mixed inflammable gas enters into the firing chamber from two intake valves;
Crossed after bottom dead center at descent of piston, IC Intake Valve Closes, piston stroking upward enters compression process, and the inflammable gas in the cylinder is compressed;
Combustion process: end in compression process, piston stroking upward is near top dead center, and by electronic control unit (ECU) control plug ignition, mixed gas fire burns;
Inflation process: piston has been crossed atdc, and gas fuel burning expands, and is mechanical energy by crankshaft ﹠ connecting with thermal power transfer;
Exhaust process: exhaust valve runs to before bottom dead center at piston and opens, and piston has been crossed after bottom dead center, and waste gas is released the firing chamber;
By this cyclic process, gas fuel burning in the firing chamber, the pressure of outburst acts on piston-top surface, by connecting rod, passes to bent axle, makes bent axle rotate outputting power;
In order to improve the performance of motor, this motor has adopted many Valves Technology, by two intake valves of each cylinder and two exhaust valves, has improved gas exchange process greatly, make more inflammable gas enter into the combustion chambers burn acting, thereby improved the performance of motor;
This motor has also adopted exhaust turbine pressuring technology in addition, gas boosting is mainly finished by pressurized machine, end in exhaust process, the waste gas that gas exhaust manifold is discharged enters into pressurized machine, drive the turbine rotation of pressurized machine, and then drive the gas compressor work of pressurized machine, after air enters into gas compressor, after gas compressor compression supercharging, output to gas handling system.
Because petrol engine adopts after the supercharging, and compression process mixing temperature and pressure is at the end also increased, and has so just increased the tendency of petrol engine detonation, for this reason, when engine design, to compression ratio, parameters such as ignition advance angle and valve timing have all been done suitable adjustment.Owing to the movement parts load is strengthened after the supercharging, so to having done enhancement process on the corresponding sports spare intensity, and adopted piston cooling nozzle to force cooling.
In addition, this motor has also adopted the multiple spot electric control fuel oil jet system, accurately controls igniting, oil spout and the discharging of motor.
Two, characteristic parameter sees the following form 1
Table 1 Gasoline Engine characteristic parameter table
Sequence number |
Project |
Unit |
Parameter |
1 |
Model |
|
BL18T |
2 |
Pattern |
|
Cold turbosupercharging, multipoint sequential injection in water-cooled, array, the band |
3 |
Cylinder number |
|
4 |
4 |
Cylinder bore |
mm |
81 |
5 |
Piston stroke |
mm |
87 |
6 |
Total displacement |
L |
1.793 |
7 |
Compression ratio |
|
9 |
8 |
Mean piston speed (during rated power) |
m/s |
15.95 |
9 |
Maximum in-cylinder pressure |
kPa |
9500 |
10 |
Power per liter |
kW/L |
69.74 |
11 |
Specific mass |
kg/kW |
1.08 |
12 |
Crankshaft rotating direction (seeing) towards clutch |
|
Left-handed |
13 |
Ignition order |
|
1-3-4-2 |
14 |
Port timing |
|
|
15 |
IVO Inlet Valve Open |
(°) |
Atdc 10 |
16 |
Intake valve closes |
(°) |
After bottom dead center 16 |
17 |
Exhaust valve leaves |
(°) |
Before bottom dead center 13 |
18 |
Exhaust valve closes |
(°) |
Budc 10 |
19 |
Lubricated form | |
Pressure lubrication | |
20 |
Machine oil total capacity (dry state is full of) |
L |
5.5 |
21 |
The type of cooling |
|
Closed circuit positive drive type water-cooled |
22 |
The fuel oil trade mark |
|
Unleaded No. 93 gasoline GB17930-1999 |
23 |
The machine oil trade mark |
|
5W-30 API SL/CF |
24 |
The cooling liquid trade mark |
|
50% ethylene glycol, 50% water |
25 |
Boundary dimension (length * wide * height) |
mm |
673.3×661.5×724.6 |
26 |
The clean quality of petrol engine |
kg |
≤135 |
|
The attachment feature parameter sees the following form 2
Table 2 petrol engine attachment feature parameter list
Sequence number |
Project |
Pattern |
1 |
Automatical control system |
SIEMENS speed density type does not have distributor, multipoint fuel sequence-injection closed loop management system |
2 |
Throttle body |
57mm,ETC5 408 238 627 |
3 |
Spark coil |
Four cylinder separation point fire coil groups |
4 |
Cooling-water temperature sensor |
The NTC type, |
5 |
Air inlet pressure sensor |
R (25 ℃)=2014 Ω+/-2.9% MPI formula, P=350kPa, U=14V |
6 |
Oil pump |
The co-cycloidal rotor formula |
7 |
The water pump thermostat |
Centrifugal cured formula (unlatching temperature: 92.5 °) |
8 |
Spark plug |
Anti-interference formula (model RC8PYCB) |
9 |
Starter motor |
Deceleration type 12V 1.3kw |
10 |
Alternator |
14V 120A: |
11 |
Turbosupercharger |
GT 1752LS |
Three, performance index and external characteristic curve, shown in 4, wherein:
Rated power: 125Kw/5500rpm (static exercise rate)
Maximum Torque: 235Nm/2000~4500rpm
Minimum specific fuel consumption: 245g/KWh.