WO2021088896A1 - 发动机及其曲轴箱 - Google Patents

发动机及其曲轴箱 Download PDF

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Publication number
WO2021088896A1
WO2021088896A1 PCT/CN2020/126594 CN2020126594W WO2021088896A1 WO 2021088896 A1 WO2021088896 A1 WO 2021088896A1 CN 2020126594 W CN2020126594 W CN 2020126594W WO 2021088896 A1 WO2021088896 A1 WO 2021088896A1
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WO
WIPO (PCT)
Prior art keywords
box body
case
shaft
crankshaft
cover
Prior art date
Application number
PCT/CN2020/126594
Other languages
English (en)
French (fr)
Inventor
邓正常
Original Assignee
赛格威科技有限公司
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Filing date
Publication date
Application filed by 赛格威科技有限公司 filed Critical 赛格威科技有限公司
Publication of WO2021088896A1 publication Critical patent/WO2021088896A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/543—Transmission for changing ratio the transmission being a continuously variable transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines

Definitions

  • the present disclosure relates to the field of engine technology, in particular to an engine and its crankcase.
  • all-terrain vehicles generally adopt a single power source driving mode, and the single power source is usually a fuel engine.
  • the single power source is usually a fuel engine.
  • all-terrain vehicles generally have insufficient power under low-speed engine conditions; at the same time, because the engine has to participate in work under all operating conditions, the mixture burns insufficiently during low-speed and variable operating conditions, low thermal efficiency, and fuel consumption. High, high content of harmful gases in the exhaust, and the structure of the engine also restricts its application in all-terrain vehicles.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • one purpose of the present disclosure is to provide a crankcase, which can be applied to a range-extending powertrain, can improve the engine, and can reduce harmful gas emissions.
  • the present disclosure further proposes an engine.
  • the crankcase according to the present disclosure includes: a first box body; a second box body, the second box body is connected below the first box body, the second box body and the first box body define A crankshaft cavity and a crankshaft hole, the crankshaft cavity is in communication with the crankshaft hole, and the crankshaft hole is formed at one end of the first box body and the second box body; an oil pan, the oil pan connected Below the second box body; a side cover, the side cover is connected to the other end of the first box body and the second box body.
  • crankcase of the embodiment of the present disclosure by reasonably arranging the first case and the second case, it is convenient for the crankshaft to extend out of the crankcase to cooperate with the rotor, so that it can be applied to a range-extended powertrain, and the overall structure is arranged Reasonable and high structural reliability.
  • a plurality of first shaft holes are formed on the lower side of the first box body, a plurality of second shaft holes are formed on the upper side of the second box body, and a plurality of first shaft holes are formed on the upper side of the second box body.
  • the shaft hole corresponds to the plurality of second shaft holes one to one, so as to be suitable for installing a crankshaft.
  • a plurality of third shaft holes are formed on the lower side of the first box body, a plurality of fourth shaft holes are formed on the upper side of the second box body, and a plurality of third shaft holes are formed on the upper side of the second box body.
  • the shaft holes correspond to the plurality of fourth shaft holes one to one, so as to be suitable for installing a balance shaft.
  • the first shaft hole, the second shaft hole, the third shaft hole, and the fourth shaft hole are all semicircular holes.
  • the first shaft hole, the second shaft hole, the third shaft hole, and the fourth shaft hole are all provided with oil grooves inside.
  • the crankcase further includes: a first case cover connected to one side of the first case body, the first case cover and the first case The body is formed with a first accommodating cavity.
  • the installation plane of the first box cover and the first box body is arranged obliquely.
  • the crankcase further includes: a second case cover connected to one side of the second case body, the second case cover and the second case
  • the body is formed with a second accommodating cavity, and the second accommodating cavity is in communication with the first accommodating cavity.
  • the second box cover is perpendicular to the installation plane of the second box body.
  • the first case is provided with at least two through holes, and the two through holes communicate with the crank chamber.
  • At least one of the first box body and the second box body is provided with a limiting portion for limiting the motor position at one end of the crankshaft hole.
  • the crankcase according to the present disclosure includes: a first box body; a second box body, the second box body is connected below the first box body, the second box body and the first box body define A crankshaft cavity and a crankshaft hole, the crankshaft cavity is in communication with the crankshaft hole, the crankshaft hole is formed at one end of the first case and the second case; a side cover, the side cover is connected to the The other end of the first box and the second box.
  • a plurality of first shaft holes are formed on the lower side of the first box body, a plurality of second shaft holes are formed on the upper side of the second box body, and a plurality of first shaft holes are formed on the upper side of the second box body.
  • the shaft hole corresponds to the plurality of second shaft holes one to one, so as to be suitable for installing a crankshaft.
  • a plurality of third shaft holes are formed on the lower side of the first box body, a plurality of fourth shaft holes are formed on the upper side of the second box body, and a plurality of third shaft holes are formed on the upper side of the second box body.
  • the shaft holes correspond to the plurality of fourth shaft holes one to one, so as to be suitable for installing a balance shaft.
  • an oil groove is provided inside the first shaft hole, the second shaft hole, the third shaft hole, and the fourth shaft hole.
  • the crankcase further includes: a first case cover connected to one side of the first case body, the first case cover and the first case The body is formed with a first accommodating cavity.
  • the installation plane of the first box cover and the first box body is arranged obliquely.
  • the crankcase further includes: a second case cover connected to one side of the second case body, the second case cover and the second case
  • the body is formed with a second accommodating cavity, and the second accommodating cavity is in communication with the first accommodating cavity.
  • the engine according to the present disclosure includes: the crankcase described above.
  • Fig. 1 is a schematic diagram of a range-extending powertrain according to an embodiment of the present disclosure
  • Figure 2 is an exploded view of the engine
  • Fig. 3 is an exploded view of the range-extending power assembly at the generator according to an embodiment of the present disclosure
  • Figure 4 is an exploded view of the generator
  • Figure 5 is a cross-sectional view of the motor mounting cover, motor housing and motor cover;
  • Figure 6 is an exploded view of the crankcase
  • Figure 7 is an exploded view of the crankcase
  • Figure 8 is a schematic diagram of the oil pan and the drive shaft
  • Figure 9 is a schematic diagram of the oil pan
  • Figure 10 is a schematic diagram of the oil pan
  • Figure 11 is an exploded view of the crankcase.
  • Crankcase 20 first case 21; first shaft hole 21a; third shaft hole 21b;
  • Oil pan 23 bottom wall 23a; side wall 23b; avoidance area 23c; oil guiding portion 23d; oil guiding rib 23e; blocking cover 23f;
  • Generator 200 motor mounting cover 210; accommodating groove 211; first limiting portion 212; fifth limiting portion 213;
  • Motor housing 220 accommodating hole 221; second limiting portion 222; third limiting portion 223; liquid inlet 224; liquid outlet 225;
  • range-extending powertrain 1000 according to an embodiment of the present disclosure will be described with reference to FIGS. 1-11.
  • the range-extending powertrain 1000 is applied to an all-terrain vehicle.
  • the range-extending powertrain 1000 may include: an engine 100 and a generator 200.
  • the generator 200 is arranged on one axial side of the engine 100.
  • the generator 200 is arranged on the engine 100.
  • the engine 100 and the generator 200 power transmission, the engine 100 drives the generator 200 to work, the generator 200 generates electric energy, the generator 200 is connected to the power battery and the electric motor of the all-terrain vehicle, and the power battery is connected to the electric motor to generate electricity.
  • the electric energy of the machine 200 can be supplied to the electric motor, so that the all-terrain vehicle can be driven to move.
  • the extended-range power assembly 1000 composed of the engine 100 and the generator 200 can convert the power generated by the engine 100 into electric energy, and then supply the electric motor, which can effectively increase the cruising range of the all-terrain vehicle and solve the lack of power.
  • the generator 200 is arranged on the side of the engine 100, the range-extending power assembly 1000 is small in size, occupies a small space, and has better integrity. It should be noted that the engine 100 in the extended-range powertrain 1000 can ensure continuous normal working conditions, thereby improving energy efficiency, reducing energy waste, and reducing harmful gas emissions.
  • the engine 100 includes a crankshaft 10 and a crankcase 20.
  • the crankshaft 10 is installed in the crankcase 20.
  • the end of the crankshaft 10 (that is, the right end) extends out of the crankcase 20.
  • the end of the crankshaft 10 can facilitate the engine Power transmission between 100 and generator 200.
  • the generator 200 includes: a motor mounting cover 210, a motor housing 220, a motor cover 230, a stator 240, and a rotor 250.
  • the motor mounting cover 210 is mounted on one side of the crankcase 20, and the motor housing 220 is installed between the motor mounting cover 210 and the motor cover 230, the stator 240 is fixed in the motor housing 220, the rotor 250 is arranged on the inner circumference of the stator 240, and the rotor 250 is rotatable relative to the stator 240.
  • the rotor 250 is connected to the shaft of the crankshaft 10. End drive.
  • the shaft end of the crankshaft 10 substantially penetrates the motor mounting cover 210 and then cooperates with the rotor 250, and then drives the rotor 250 to rotate to generate electricity.
  • the engine 100 and the electric motor 200 can be highly integrated and have high transmission efficiency.
  • the generator 200 can be firmly mounted on one side of the crankcase 20, which can further reduce the volume of the extended range powertrain 1000, and by providing the motor mounting cover 210 and the motor housing 220 and the motor cover 230, the stator 240 and the rotor 250 can be installed reasonably, the installation reliability of both can be ensured, and the transmission reliability of the shaft end of the crankshaft 10 and the rotor 250 can be ensured.
  • the rotor 250 is formed with a rotor hole, the shaft end of the crankshaft 10 passes through the rotor hole, and the shaft end of the crankshaft 10 is driven with the rotor 250.
  • the rotor 250 is sleeved on the shaft end of the crankshaft 10, and then the two sleeves are sleeved and matched, so that synchronous rotation can be better ensured, power transmission between the engine 100 and the generator 200 can be realized, and the two can be guaranteed.
  • the stability of power transmission is provided.
  • the rotor 250 is formed with internal splines at the rotor hole
  • the shaft end of the crankshaft 10 is formed with external splines
  • the internal splines are matched with the external splines.
  • the coordination of the inner spline and the outer spline is simple, reliable, and easy to implement.
  • the rotor hole is formed with an inner cone surface
  • the shaft end of the crankshaft 10 is formed with an outer cone surface 11
  • the inner cone surface and the outer cone surface 11 cooperate with each other.
  • the inner cone surface and the outer cone surface 11 can be in close contact with each other, so that the rotor 250 can be firmly installed on the shaft end, and the reliability and transmission stability of the two can be ensured.
  • the motor housing 220 is formed with an accommodating hole 221
  • the motor mounting cover 210 and the motor cover 230 are formed with an accommodating slot 211 facing the motor housing 220
  • the stator 240 is accommodated in the housing.
  • the middle of the stator 240 is accommodated in the accommodating hole 221
  • the two sides of the stator 240 are respectively accommodated in the corresponding accommodating slots 211, so that the stator 240 can be effectively accommodated and the installation reliability of the stator 240 can be ensured.
  • the axial size of the motor housing 220 can be reduced.
  • the accommodating hole 221 and the stator 240 are interference fit.
  • the interference fit is simple and reliable, which can ensure the reliability of the installation of the stator 240 in the motor housing 220.
  • the motor mounting cover 210 is provided with a first limiting portion 212, and both sides of the motor housing 220 are provided with a second limiting portion 222 and a third limiting portion 223 ,
  • the motor cover 230 is provided with a fourth limiting portion 231, the first limiting portion 212 and the second limiting portion 222 are in limiting engagement, and the third limiting portion 223 and the fourth limiting portion 231 are in limiting engagement.
  • the first limit part 212 and the second limit part 222 can play the role of pre-limiting the motor mounting cover 210 and the motor housing 220, which can reduce the installation difficulty of the generator 200, and can improve the motor mounting cover 210 and the motor.
  • the third limit part 223 and the fourth limit part 231 can play the role of pre-limiting the motor housing 220 and the motor cover 230, can reduce the installation difficulty of the generator 200, and can improve the motor housing 220 and the motor cover 230. Reliability between installations.
  • one of the first limiting portion 212 and the second limiting portion 222 is a convex limiting ring and the other is a concave limiting groove
  • the third limiting portion 223 and the second limiting portion 223 One of the four limiting parts 231 is a convex limiting ring and the other is a concave limiting groove.
  • the first limiting portion 212 and the fourth limiting portion 231 are both limiting rings
  • the second limiting portion 222 and the third limiting portion 223 are both limiting grooves, so that the motor housing can be lowered at least to a certain extent. 220 manufacturing difficulty.
  • the motor mounting cover 210 is provided with a fifth limiting portion 213, the crankcase 20 is provided with a sixth limiting portion 27, the fifth limiting portion 213 and the sixth limiting portion 27 Limit coordination.
  • the fifth limit part 213 and the sixth limit part 27 can play the role of pre-limiting the motor mounting cover 210 and the crankcase 20, can reduce the installation difficulty of the generator 200, and can improve the motor mounting cover 210 and the crankcase. 20's installation reliability.
  • one of the fifth limiting portion 213 and the sixth limiting portion 27 is a convex limiting ring and the other is a concave limiting groove.
  • the fifth limiting portion 213 may be a limiting groove
  • the sixth limiting portion 27 may be a limiting ring.
  • the motor mounting cover 210 may be provided with a through hole for the shaft end of the crankshaft 10 to pass through, the through hole may be provided with a bearing, and a limit ring is arranged around the bearing.
  • the stator 240 is connected with an outlet end, and a part of the motor cover 230 protrudes away from the motor housing 220 to form an accommodation space for accommodating the outlet end.
  • the generator 200 further includes :The box cover 260, the box cover 260 is arranged to cover the accommodating space. Therefore, the generator 200 can effectively solve the problem of the arrangement of the outlet end, and only the box cover 260 needs to be added, thereby simplifying the manufacturing difficulty of the generator 200.
  • a gasket may be provided between the box cover 260 and the motor cover 230.
  • a liquid cooling channel is formed in the motor housing 220, and the motor housing 220 is also provided with a liquid inlet 224 and a liquid outlet 225 communicating with the liquid cooling channel. That is to say, the coolant can flow in the motor housing 220, and the coolant provided in the cooling channel can take away the heat generated by the generator 200 during operation, so that the temperature of the generator 200 can be effectively reduced, and the generator 200 can be The temperature is kept within a reasonable working temperature range.
  • the motor mounting cover 210 can be detachably mounted on one side of the crankcase 20
  • the motor housing 220 can be detachably mounted on one side of the motor mounting cover 210
  • the motor cover 230 can be detachably mounted on the side of the motor housing 220.
  • the detachable way can use fasteners to fix the connection.
  • the generator 200 thus arranged has a simple structure and is convenient to install, thereby reducing the difficulty of installing the generator 200 and facilitating subsequent maintenance.
  • the engine 100 may further include: a cylinder block 30 and two piston connecting rod groups 40.
  • the cylinder block 30 is arranged on the upper part of the crankcase 20.
  • the cylinder block 30 has two cylinders and two piston connecting rods.
  • the pistons of the group 40 are respectively arranged in two cylinders and the connecting rods are connected to the crankshaft 10 respectively.
  • crankcase 20 of the engine 100 according to an embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.
  • the crankcase 20 may include: a first box body 21, a second box body 22, an oil pan 23 and a side cover 24, and a second box body 22 Connected to the bottom of the first box body 21, the second box body 22 and the first box body 21 define a crankshaft cavity and a crankshaft hole, the crankshaft cavity is in communication with the crankshaft hole, and the crankshaft hole is formed in the first box body 21 and the second box body At one end of 22, the oil pan 23 is connected to the bottom of the second box body 22, and the side cover 24 is connected to the other ends of the first box body 21 and the second box body 22.
  • the first box body 21 and the second box body 22 are matched up and down, so that the first box body 21 and the second box body 22 can define a crankshaft cavity, the crankshaft 10 can be accommodated in the crankshaft cavity, and the shaft end of the crankshaft 10 can pass through
  • the crankshaft hole extends out of the crankshaft cavity, and then extends into the generator 200 to cooperate with the rotor 250, wherein a bearing or bushing may be arranged at the crankshaft hole, so that the rotation stability of the crankshaft 10 can be ensured.
  • the side cover 24 can serve as a cover, so that the structural reliability of the crankcase 20 can be further improved.
  • crankcase 20 of the embodiment of the present disclosure by rationally arranging the first case 21 and the second case 22, it is convenient for the crankshaft 10 to extend out of the crankcase 20 to cooperate with the rotor 250, so that it can be applied to a range-extending powertrain. It is 1000, and the overall structure layout is reasonable, and the structure reliability is high.
  • a plurality of first shaft holes 21a are formed on the lower side of the first box body 21, and a plurality of second shaft holes 22a are formed on the upper side of the second box body 22.
  • the holes 21a correspond to the plurality of second shaft holes 22a one-to-one so as to be suitable for installing the crankshaft 10. That is to say, the first shaft hole 21a of the first box body 21 and the second shaft hole 22a of the second box body 22 cooperate with the crankshaft 10, which can facilitate the installation and arrangement of the crankshaft 10, and can reduce the first box body 21 and the second shaft hole 22a.
  • the layout of the second box 22 is difficult.
  • a plurality of third shaft holes 21b are formed on the lower side of the first box body 21, and a plurality of fourth shaft holes 22b are formed on the upper side of the second box body 22.
  • the third shaft hole 21b corresponds to the plurality of fourth shaft holes 22b one to one, so as to be suitable for installing a balance shaft.
  • a plurality of third shaft holes 21b and a plurality of first shaft holes 21a are arranged at intervals on the lower side of the first box body 21, and a plurality of second shaft holes 22a and a plurality of fourth shaft holes 22b are provided on the second box body 22.
  • the first box body 21 and the second box body 22 arranged in this way can also accommodate a balance shaft, which is driven by the crankshaft 10.
  • the balance shaft can be used to balance the reciprocating inertia generated by the movement of the piston and connecting rod group 40 Therefore, the running smoothness of the engine 100 can be improved.
  • the first shaft hole 21a, the second shaft hole 22a, the third shaft hole 21b, and the fourth shaft hole 22b may all be semicircular holes.
  • the semi-circular hole is easy to design and manufacture, and the shaft hole of such a shape can easily support the crankshaft 10 and the balance shaft, and can also facilitate the installation and arrangement of the bearing and the bearing bush.
  • the first shaft hole 21a, the second shaft hole 22a, the third shaft hole 21b, and the fourth shaft hole 22b are all provided with oil grooves inside.
  • the crankcase 20 further includes: a first case cover 25, the first case cover 25 is connected to one side of the first case body 21, and the first case cover 25 is connected to
  • the first box 21 is formed with a first accommodating cavity.
  • the first accommodating cavity can play a role of accommodating, can change the structure of the crankcase 20, and can make the overall layout of the crankcase 20 more reasonable.
  • the installation plane of the first box cover 25 and the first box body 21 is arranged obliquely.
  • the first box cover 25 thus arranged can effectively adapt to the surface of the first box body 21, and can ensure its installation reliability on the surface of the first box body 21.
  • the first box cover 25 and the first box body 21 can be tightly installed.
  • the firmware is permanently connected.
  • the crankcase 20 may further include: a second box cover 26, the second box cover 26 is connected to one side of the second box body 22, the second box cover 26 and the second box body 22 are formed There is a second accommodating cavity, and the second accommodating cavity is in communication with the first accommodating cavity.
  • the second accommodating cavity can play a role of accommodating, can change the structure of the crankcase 20, and can make the overall layout of the crankcase 20 more reasonable.
  • the installation plane of the second box cover 26 and the second box body 22 are vertically arranged.
  • the second box cover 26 provided in this way can effectively adapt to the surface of the second box body 22, and can ensure its installation reliability on the surface of the second box body 22.
  • the second box cover 26 and the second box body 22 can be tightly spaced.
  • the firmware is permanently connected.
  • the first box body 21 is provided with at least two through holes, and the two through holes communicate with the crankshaft cavity.
  • the two through holes can correspond to the two cylinders of the cylinder block 30, and can also correspond to the two piston connecting rod groups 40. That is to say, the crankcase 20 thus arranged can be applied to the two-cylinder engine 100, so as to improve The power performance of the engine 100 can make the power generation efficiency of the generator 200 high.
  • At least one of the first box body 21 and the second box body 22 is provided with a limiting part for limiting the position of the generator 200 on one side of the crankshaft hole.
  • the limiting portion is the sixth limiting portion 27 described above, and the first box body 21 and the second box body 22 provided in this way can ensure the installation reliability of the generator 200.
  • the oil pan 23 may include: a bottom wall 23a and a plurality of side walls 23b, the plurality of side walls 23b are connected to different sides of the bottom wall 23a, and more The two side walls 23b define an open oil groove above the bottom wall 23a.
  • the oil tank is used to contain lubricating oil.
  • the lubricating oil for lubricating the engine 100 moves downwards under the action of gravity, and finally gathers in the oil tank.
  • the lubricating oil in the oil tank can also be supplied upward in a certain way.
  • the oil supply method may be a sputtering method or a suction method.
  • a circular arc transition is adopted between adjacent side walls 23b. The arc transition can make the oil pan 23 transition naturally, with high structural reliability and good integrity.
  • At least one side wall 23 b is provided with an avoiding area 23 c for avoiding the transmission shaft 300.
  • the drive shaft 300 is provided around the bottom wall 23a of the oil pan 23, and the avoidance area 23c can effectively avoid the drive shaft 300, and can give the drive shaft 300 a certain accommodation space, thereby making the overall structure of the all-terrain vehicle
  • the layout is reasonable, and at least to a certain extent, the minimum ground distance of the all-terrain vehicle can be increased, and the passage of the all-terrain vehicle can be improved.
  • the surface of the avoidance area 23c may be an arc-shaped surface recessed into the oil groove.
  • the curved surface can effectively avoid the transmission shaft 300, and can reduce the manufacturing difficulty of the oil pan 23, and can improve the structural reliability of the oil pan 23.
  • two opposite side walls 23b are provided with avoidance areas 23c. That is to say, both the left and right side walls 23b of the oil pan 23 are provided with avoidance areas 23c, and the two transmission shafts 300 are respectively arranged on both sides of the oil pan 23.
  • the overall layout of the oil pan 23 thus arranged is reasonable.
  • the two drive shafts 300 can be effectively avoided, and the overall layout of the all-terrain vehicle can be reasonable.
  • each side wall 23 b is provided with an oil guide portion 23 d extending obliquely from the upper end toward the bottom wall 23 a.
  • the oil guide portion 23d can be an oil guide slope, which can facilitate the flow of lubricating oil down to the bottom of the oil pan 23, and can improve the ability of the oil pan 23 to gather lubricating oil.
  • an oil guiding rib 23e is formed on the inner surface of each side wall 23b.
  • the oil guiding rib 23e may be a protruding rib.
  • the arrangement of the oil guiding rib 23e can play a role of guiding oil on the one hand, and on the other hand can improve the structural reliability of the oil pan 23.
  • the bottom wall 23a is formed with an oil drain hole, and a plug 23f is provided at the oil drain hole.
  • the user or maintenance personnel can open the blocking cover 23f, discharge the lubricating oil, and then replace the lubricating oil, which can facilitate the replacement of lubricating oil and can help improve the performance of the engine 100.
  • the cross-sectional area of the oil pan 23 decreases from the opening to the bottom.
  • the oil sump 23 is configured as a structure that is tapered from top to bottom, and the oil sump 23 provided in this way facilitates the accumulation of lubricating oil and can facilitate the lubricating oil to re-lubricate the moving pair.
  • the oil pan 23 is an aluminum alloy shell.
  • the aluminum alloy shell has high structural strength and light weight.
  • the oil pan 23 thus arranged meets the lightweight design goal of the all-terrain vehicle.
  • the all-terrain vehicle includes the range-extending power assembly 1000, the power battery, the electric motor, and the transmission system of the above embodiment.
  • the power battery is connected to the generator 200
  • the electric motor is connected to the power battery
  • the input end of the transmission system is connected to Motor connection.

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Abstract

一种曲轴箱(20)，包括：第一箱体(21)；第二箱体(22)，第二箱体(22)连接于第一箱体(21)的下方，第二箱体(22)和第一箱体(21)限定出曲轴腔和曲轴孔，曲轴腔与曲轴孔连通，曲轴孔形成于第一箱体(21)和第二箱体(22)的一端；油底壳(23)，油底壳(23)连接于第二箱体(22)的下方；边盖(24)，边盖(24)连接于第一箱体(21)和第二箱体(22)的另一端。该曲轴箱应用于一种发动机(100)。

Description

发动机及其曲轴箱
相关申请的交叉引用
本申请要求于2019年11月04日提交的名称为“发动机及其曲轴箱”的中国专利申请号“201911067952.4”的优先权。
技术领域
本公开涉及发动机技术领域，尤其是涉及一种发动机及其曲轴箱。
背景技术
相关技术中，全地形车一般采用单动力源的驱动方式，单动力源通常是一个燃油发动机。其中，全地形车在发动机低转速工况下普遍存在动力不足；同时，由于发动机在所有工况下都要参与工作，在低转速变工况过程中混合气燃烧不充分，热效率低，燃油消耗高，尾气中有害气体含量高，而且发动机的结构也制约着其在全地形车上的应用。
公开内容
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开的一个目的在于提出一种曲轴箱，该曲轴箱可以适用于增程式动力总成，可以改进发动机，可以减少有害气体的排放。
本公开进一步地提出了一种发动机。
根据本公开的曲轴箱，包括：第一箱体；第二箱体，所述第二箱体连接于所述第一箱体的下方，所述第二箱体和所述第一箱体限定出曲轴腔和曲轴孔，所述曲轴腔与所述曲轴孔连通，所述曲轴孔形成于所述第一箱体和所述第二箱体的一端；油底壳，所述油底壳连接于所述第二箱体的下方；边盖，所述边盖连接于所述第一箱体和所述第二箱体的另一端。
由此，根据本公开实施例的曲轴箱，通过合理设置第一箱体和第二箱体，可以方便曲轴伸出曲轴箱与转子配合，从而可以适用于增程式动力总成，而且整体结构布置合理，结构可靠性高。
在本公开的一些示例中，所述第一箱体的下侧形成有多个第一轴孔，所述第二箱体的上侧形成有多个第二轴孔，多个所述第一轴孔与多个所述第二轴孔一一对应，以适于安装曲轴。
在本公开的一些示例中，所述第一箱体的下侧形成有多个第三轴孔，所述第二箱体的上侧形成有多个第四轴孔，多个所述第三轴孔与多个所述第四轴孔一一对应，以适于安装平衡轴。
在本公开的一些示例中，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔均为半圆孔。
在本公开的一些示例中，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔内 部均设置有油槽。
在本公开的一些示例中，所述曲轴箱还包括：第一箱盖，所述第一箱盖连接于所述第一箱体的一侧，所述第一箱盖与所述第一箱体形成有第一容置腔。
在本公开的一些示例中，相对于所述第一箱体和所述第二箱体的结合平面，所述第一箱盖与所述第一箱体的安装平面倾斜设置。
在本公开的一些示例中，所述曲轴箱还包括：第二箱盖，所述第二箱盖连接于所述第二箱体的一侧，所述第二箱盖与所述第二箱体形成有第二容置腔，所述的第二容置腔与所述第一容置腔连通。
在本公开的一些示例中相对于所述第一箱体和所述第二箱体的结合平面，所述第二箱盖与所述第二箱体的安装平面垂直设置。
在本公开的一些示例中，所述第一箱体设置有至少两个通孔，两个所述通孔与所述曲轴腔相连通。
在本公开的一些示例中，所述第一箱体和所述第二箱体中的至少一个在所述曲轴孔的一端设置有用于对电机限位的限位部。
根据本公开的曲轴箱，包括：第一箱体；第二箱体，所述第二箱体连接于所述第一箱体的下方，所述第二箱体和所述第一箱体限定出曲轴腔和曲轴孔，所述曲轴腔与所述曲轴孔连通，所述曲轴孔形成于所述第一箱体和所述第二箱体的一端；边盖，所述边盖连接于所述第一箱体和所述第二箱体的另一端。
在本公开的一些示例中，所述第一箱体的下侧形成有多个第一轴孔，所述第二箱体的上侧形成有多个第二轴孔，多个所述第一轴孔与多个所述第二轴孔一一对应，以适于安装曲轴。
在本公开的一些示例中，所述第一箱体的下侧形成有多个第三轴孔，所述第二箱体的上侧形成有多个第四轴孔，多个所述第三轴孔与多个所述第四轴孔一一对应，以适于安装平衡轴。
在本公开的一些示例中，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔内部均设置有油槽。
在本公开的一些示例中，所述曲轴箱还包括：第一箱盖，所述第一箱盖连接于所述第一箱体的一侧，所述第一箱盖与所述第一箱体形成有第一容置腔。
在本公开的一些示例中，相对于所述第一箱体和所述第二箱体的结合平面，所述第一箱盖与所述第一箱体的安装平面倾斜设置。
在本公开的一些示例中，所述曲轴箱还包括：第二箱盖，所述第二箱盖连接于所述第二箱体的一侧，所述第二箱盖与所述第二箱体形成有第二容置腔，所述的第二容置腔与所述第一容置腔连通。
根据本公开的发动机，包括：所述的曲轴箱。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的增程式动力总成的示意图；
图2是发动机的分解图；
图3是根据本公开实施例的增程式动力总成在发电机处的分解图；
图4是发电机的分解图；
图5是电机安装盖、电机壳和电机盖的剖视图；
图6是曲轴箱的分解图；
图7是曲轴箱的分解图；
图8是油底壳和传动轴的示意图；
图9是油底壳的示意图；
图10是油底壳的示意图；
图11是曲轴箱的分解图。
附图标记：
增程式动力总成1000；
发动机100；曲轴10；外锥面11；
曲轴箱20；第一箱体21；第一轴孔21a；第三轴孔21b；
第二箱体22；第二轴孔22a；第四轴孔22b；
油底壳23；底壁23a；侧壁23b；避让区23c；导油部23d；导油筋23e；堵盖23f；
边盖24；第一箱盖25；第二箱盖26；第六限位部27；
缸体30；活塞连杆组40；
发电机200；电机安装盖210；容置槽211；第一限位部212；第五限位部213；
电机壳220；容置孔221；第二限位部222；第三限位部223；进液口224；出液口225；
电机盖230；第四限位部231；定子240；转子250；盒盖260；
传动轴300。
具体实施方式
下面详细描述本公开的实施例，参考附图描述的实施例是示例性的，下面详细描述本公开的实施例。
下面参考图1-图11描述根据本公开实施例的实施例的增程式动力总成1000，该增程式动力总成1000应用于全地形车中。
如图1所示，根据本公开实施例的增程式动力总成1000可以包括：发动机100和发电机200，发电机200设置于发动机100的轴向一侧，例如，发电机200设置于发动机100的右侧。其中，发动机100和发电机200动力传递，发动机100带动发电机200工作，发电机200会产生电能，发电机200与全地形车的动力电池和电动机相连接，动力电池与电动机相连接，这样发电机200的电能，可以供给电动机，从而可以驱动全地形车运动。
由此，由发动机100和发电机200组成的增程式动力总成1000，可以将利用发动机100产生的动力转化为电能，再供给电动机，从而可以有效增加全地形车的续航里程，可以解决动力不足的问题，而且由于发电机200设置于发动机100的一侧，增程式动力总成1000体积小，占用空间小，整体性更好。需要说明的是，增程式动力总成1000内的发动机100可以保证持续正常工况工作，从而可以提高能效，可以减少能源的浪费，以及可以减少有害气体的排放。
如图2所示，发动机100包括曲轴10和曲轴箱20，曲轴10安装于曲轴箱20，曲轴10的轴端(即右侧轴端)伸出曲轴箱20，曲轴10的轴端可以方便发动机100与发电机200动力传递。
如图3和图4所示，发电机200包括：电机安装盖210、电机壳220、电机盖230、定子240和转子250，电机安装盖210安装于曲轴箱20的一侧，电机壳220安装于电机安装盖210和电机盖230之间，定子240固定于电机壳220内，转子250设置于定子240的内周，而且转子250相对定子240可以转动，转子250与曲轴10的轴端传动。也就是说，曲轴10的轴端实质上穿过电机安装盖210后与转子250相配合，然后带动转子250转动，以进行发电。此种方式可以使得发动机100和电动机200集成度高，传动效率高。
由此，通过设置电机安装盖210，发电机200可以牢靠安装在曲轴箱20的一侧，可以进一步地减小增程式动力总成1000的体积，并且，通过设置电机安装盖210、电机壳220和电机盖230，可以合理安装定子240和转子250，可以保证两者的安装可靠性，以及可以保证曲轴10的轴端和转子250的传动可靠性。
根据本公开的一个可选实施例，转子250形成有转子孔，曲轴10的轴端穿过转子孔，而且曲轴10的轴端与转子250传动。也就是说，转子250套设在曲轴10的轴端上，然后两者套设配合，从而可以更好地保证同步转动，可以实现发动机100和发电机200之间的动力传递，可以保证保证两者的动力传递稳定性。
一种可选地，转子250在转子孔处形成有内花键，曲轴10的轴端形成有外花键，内花键与外花键花键配合。内花键和外花键的配合，简单可靠，而且易于实施。
另一种可选地，如图3和图4所示，转子孔形成有内锥面，曲轴10的轴端形成有外锥面11，内锥面与外锥面11相互配合。内锥面和外锥面11可以相互贴靠配合，这样可以使得转子250能够牢靠地安装在轴端上，可以保证两者的可靠性和传动稳定性。
具体地，如图3和图4所示，电机壳220形成有容置孔221，电机安装盖210和电机盖230 形成有朝向电机壳220的容置槽211，定子240容置于容置孔221和两个容置槽211内。也就是说，定子240的中部容置于容置孔221内，定子240的两侧分别容置于对应的容置槽211内，这样可以有效容置定子240，可以保证定子240的安装可靠性，而且可以减小电机壳220的轴向尺寸。
可选地，容置孔221与定子240过盈配合。过盈配合的方式简单可靠，这样可以保证定子240在电机壳220内的安装可靠性。
根据本公开的一个具体实施例，如图5所示，电机安装盖210设置有第一限位部212，电机壳220的两侧设置有第二限位部222和第三限位部223，电机盖230设置有第四限位部231，第一限位部212与第二限位部222限位配合，第三限位部223和第四限位部231限位配合。第一限位部212和第二限位部222可以起到对电机安装盖210和电机壳220预限位的作用，可以降低发电机200的安装难度，可以提高电机安装盖210和电机壳220之间的安装可靠性。第三限位部223和第四限位部231可以起到对电机壳220和电机盖230预限位的作用，可以降低发电机200的安装难度，可以提高电机壳220和电机盖230之间的安装可靠性。
其中，如图5所示，第一限位部212和第二限位部222中的一个为外凸的限位环且另一个为内凹的限位槽，第三限位部223和第四限位部231中的一个为外凸的限位环且另一个为内凹的限位槽。例如，第一限位部212和第四限位部231均为限位环，第二限位部222和第三限位部223均为限位槽，这样至少一定程度上能够降低电机壳220的制造难度。通过限位槽和限位环的配合，可以提高发电机200的结构可靠性，以及可以降低发电机200的安装难度。
还有，结合图5和图11所示，电机安装盖210设置有第五限位部213，曲轴箱20设置有第六限位部27，第五限位部213与第六限位部27限位配合。第五限位部213和第六限位部27可以起到对电机安装盖210和曲轴箱20预限位的作用，可以降低发电机200的安装难度，以及可以提高电机安装盖210和曲轴箱20的安装可靠性。
其中，如图5和图11所示，第五限位部213和第六限位部27中的一个为外凸的限位环且另一个为内凹的限位槽。例如，第五限位部213可以为限位槽，第六限位部27可以为限位环。其中，电机安装盖210上可以设置有供曲轴10的轴端穿过的穿孔，该穿孔可以设置有轴承，限位环围绕轴承设置。
可选地，如图3和图4所示，定子240连接有出线端，电机盖230的一部分向远离电机壳220的方向凸出以形成容置出线端的容置空间，发电机200还包括：盒盖260，盒盖260盖设于容置空间处。由此，发电机200可以有效解决出线端的布置问题，而且仅需要增加盒盖260即可，从而可以简化发电机200的制造难度。盒盖260和电机盖230之间可以设置有密封垫。
具体地，如图4所示，电机壳220内形成有液冷通道，电机壳220还设置有连通液冷通道的进液口224和出液口225。也就是说，电机壳220内可以流动有冷却液，设置在冷却通道内的冷却液可以带走发电机200工作时产生的热量，从而可以有效降低发电机200的温度，可以使得发电机200的温度保持在合理的工作温度区间。
可选地，电机安装盖210可以拆卸地安装在曲轴箱20的一侧，电机壳220可以拆卸地安装在电机安装盖210的一侧，电机盖230可以拆卸地安装在电机壳220的一侧。可拆卸的方式可以采用紧固件固定连接。如此设置的发电机200结构简单，安装方便，从而可以降低发电机200的安装难度，以及可以便于后续的维修。
其中，如图4所示，发动机100还可以包括：缸体30和两个活塞连杆组40，缸体30设置于曲轴箱20的上部，缸体30具有两个气缸，两个活塞连杆组40的活塞分别设置于两个气缸内且连杆分别连接在曲轴10上。
下面结合附图详细描述一下根据本公开实施例的发动机100的曲轴箱20。
如图6、图7和图11所示，根据本公开实施例的曲轴箱20可以包括：第一箱体21、第二箱体22、油底壳23和边盖24，第二箱体22连接于第一箱体21的下方，第二箱体22和第一箱体21限定出曲轴腔和曲轴孔，曲轴腔与曲轴孔连通，曲轴孔形成于第一箱体21和第二箱体22的一端，油底壳23连接于第二箱体22的下方，边盖24连接于第一箱体21和第二箱体22的另一端。第一箱体21和第二箱体22上下配合，这样第一箱体21和第二箱体22可以限定出曲轴腔，曲轴10可以容置于曲轴腔内，而且曲轴10的轴端可以通过曲轴孔伸出曲轴腔，然后伸入发电机200内与转子250配合，其中，曲轴孔处可以设置有轴承或者轴瓦，这样可以保证曲轴10的转动稳定性。边盖24可以起到遮盖的作用，从而可以进一步地提高曲轴箱20的结构可靠性。
由此，根据本公开实施例的曲轴箱20，通过合理设置第一箱体21和第二箱体22，可以方便曲轴10伸出曲轴箱20与转子250配合，从而可以适用于增程式动力总成1000，而且整体结构布置合理，结构可靠性高。
如图6和图7所示，第一箱体21的下侧形成有多个第一轴孔21a，第二箱体22的上侧形成有多个第二轴孔22a，多个第一轴孔21a与多个第二轴孔22a一一对应，以适于安装曲轴10。也就是说，第一箱体21的第一轴孔21a和第二箱体22的第二轴孔22a共同配合曲轴10，这样可以方便曲轴10的安装布置，而且可以降低第一箱体21和第二箱体22的布置难度。
进一步地，如图6和图7所示，第一箱体21的下侧形成有多个第三轴孔21b，第二箱体22的上侧形成有多个第四轴孔22b，多个第三轴孔21b与多个第四轴孔22b一一对应，以适于安装平衡轴。多个第三轴孔21b和多个第一轴孔21a在第一箱体21的下侧间隔设置，多个第二轴孔22a和多个第四轴孔22b在第二箱体22的上侧间隔设置，如此设置的第一箱体21和第二箱体22还可以容置平衡轴，平衡轴与曲轴10传动，平衡轴可以用于平衡活塞连杆组40运动时所产生的往复惯性力，从而可以提高发动机100的运行平顺性。
具体地，如图6和图7所示，第一轴孔21a、第二轴孔22a、第三轴孔21b和第四轴孔22b可以均为半圆孔。半圆孔易于设计制造，而且如此形状的轴孔易于支撑曲轴10和平衡轴，也可以便于轴承和轴瓦的安装布置。
可选地，第一轴孔21a、第二轴孔22a、第三轴孔21b和第四轴孔22b内部均设置有油槽。 油槽内流动有润滑油，轴承或者轴瓦可以与油槽连通，这样润滑油可以有效润滑曲轴10和平衡轴的接触面，可以减少曲轴10和平衡轴的磨损，可以延长曲轴10和平衡轴的使用寿命，可以提高曲轴10和平衡轴的可靠性。
根据本公开的一个可选实施例，如图6所示，曲轴箱20还包括：第一箱盖25，第一箱盖25连接于第一箱体21的一侧，第一箱盖25与第一箱体21形成有第一容置腔。第一容置腔可以起到容置的作用，可以改变曲轴箱20的结构，可以使得曲轴箱20整体布局更加合理。
其中，如图6所示，相对于第一箱体21和第二箱体22的结合平面，第一箱盖25与第一箱体21的安装平面倾斜设置。如此设置的第一箱盖25可以有效适应第一箱体21的表面，可以保证其在第一箱体21表面的安装可靠性，第一箱盖25和第一箱体21之间可以采用紧固件固定连接。
进一步地，如图6所示，曲轴箱20还可以包括：第二箱盖26，第二箱盖26连接于第二箱体22的一侧，第二箱盖26与第二箱体22形成有第二容置腔，的第二容置腔与第一容置腔连通。第二容置腔可以起到容置的作用，可以改变曲轴箱20的结构，可以使得曲轴箱20整体布局更加合理。
其中，如图6和图11所示，相对于第一箱体21和第二箱体22的结合平面，第二箱盖26与第二箱体22的安装平面垂直设置。如此设置的第二箱盖26可以有效适应第二箱体22的表面，可以保证其在第二箱体22表面的安装可靠性，第二箱盖26和第二箱体22之间可以采用紧固件固定连接。
可选地，第一箱体21设置有至少两个通孔，两个通孔与曲轴腔相连通。两个通孔可以与缸体30的两个气缸相对应，也可以对于两个活塞连杆组40相对应，也就是说，如此设置的曲轴箱20可以适用于双缸发动机100，从而可以提升发动机100的动力性能，可以使得发电机200的发电效率高。
具体地，第一箱体21和第二箱体22中的至少一个在曲轴孔的一侧设置有用于对发电机200限位的限位部。限位部即上述的第六限位部27，如此设置的第一箱体21和第二箱体22可以保证发电机200的安装可靠性。
下面再结合附图详细描述一下根据本公开实施例的曲轴箱20的油底壳23。
如图8-图10所示，根据本公开实施例的油底壳23可以包括：底壁23a和多个侧壁23b，多个侧壁23b连接在底壁23a的不同侧边上，而且多个侧壁23b在底壁23a的上方限定出敞开的油槽。可以理解的是，油槽用于容置润滑油，润滑发动机100运动副的润滑油在重力作用下向下流动，最终汇聚到油槽内，油槽内的润滑油还可以采用一定的方式向上供油，例如，供油方式可以为溅射方式，也可以为抽吸方式。其中，相邻的侧壁23b之间采用圆弧过渡。圆弧过渡可以使得油底壳23过渡自然，结构可靠性高，整体性好。
如图8所示，至少一个侧壁23b设置有用于避让传动轴300的避让区23c。也就是说，该油底壳23的底壁23a周围设置有传动轴300，避让区23c可以有效避让开传动轴300，可以 给予传动轴300一定的容置空间，从而可以使得全地形车整体结构布局合理，而且至少一定程度上可以提高全地形车的最小离地距离，可以提升全地形车的通过性。
可选地，如图8和图9所示，避让区23c的表面可以为向油槽内部凹入的弧形表面。弧形表面可以有效避让传动轴300，而且可以降低油底壳23的制造难度，可以提高油底壳23的结构可靠性。
其中，如图8所示，两个相对的侧壁23b均设置有避让区23c。也就是说，油底壳23的左右两个侧壁23b均设置有避让区23c，两个传动轴300分别设置在油底壳23的两侧，如此设置的油底壳23整体布局合理，可以有效避开两个传动轴300，而且可以使得全地形车的整体布局合理。
可选地，如图9所示，每个侧壁23b均设置有从上端朝向底壁23a倾斜延伸的导油部23d。导油部23d可以为导油斜面，这样可以有利于润滑油向下流动至油底壳23的底部，可以提升油底壳23的汇聚润滑油的能力。
其中，如图9所示，每个侧壁23b的内表面形成有导油筋23e。导油筋23e可以为凸出的筋条，导油筋23e的设置一方面可以起到导油的作用，另一方面可以提高油底壳23的结构可靠性。
具体地，如图8和图9所示，底壁23a形成有放油孔，放油孔处设置有堵盖23f。在长时间未更换润滑油时，用户或者维修人员可以打开堵盖23f，放出润滑油，然后更换润滑油，从而可以方便润滑油的更换，可以有利于提升发动机100的性能。
可选地，如图8和图10所示，油底壳23的横截面积从开口向底部递减。也就是说，油底壳23构造为从上向下渐缩的结构，如此设置的油底壳23便于汇聚润滑油，可以可以便于润滑油再次润滑运动副。
其中，油底壳23为铝合金壳。铝合金壳结构强度高，重量轻，如此设置的油底壳23符合全地形车的轻量化设计目标。
根据本公开实施例的全地形车，包括上述实施例的增程式动力总成1000、动力电池、电动机和传动系统，动力电池与发电机200连接，电动机与动力电池连接，传动系统的输入端与电动机连接。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (19)

  1. 一种曲轴箱，其特征在于，包括：
    第一箱体；
    第二箱体，所述第二箱体连接于所述第一箱体的下方，所述第二箱体和所述第一箱体限定出曲轴腔和曲轴孔，所述曲轴腔与所述曲轴孔连通，所述曲轴孔形成于所述第一箱体和所述第二箱体的一端；
    油底壳，所述油底壳连接于所述第二箱体的下方；
    边盖，所述边盖连接于所述第一箱体和所述第二箱体的另一端。
  2. 根据权利要求1所述的曲轴箱，其特征在于，所述第一箱体的下侧形成有多个第一轴孔，所述第二箱体的上侧形成有多个第二轴孔，多个所述第一轴孔与多个所述第二轴孔一一对应，以适于安装曲轴。
  3. 根据权利要求2所述的曲轴箱，其特征在于，所述第一箱体的下侧形成有多个第三轴孔，所述第二箱体的上侧形成有多个第四轴孔，多个所述第三轴孔与多个所述第四轴孔一一对应，以适于安装平衡轴。
  4. 根据权利要求3所述的曲轴箱，其特征在于，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔均为半圆孔。
  5. 根据权利要求3所述的曲轴箱，其特征在于，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔内部均设置有油槽。
  6. 根据权利要求1所述的曲轴箱，其特征在于，还包括：第一箱盖，所述第一箱盖连接于所述第一箱体的一侧，所述第一箱盖与所述第一箱体形成有第一容置腔。
  7. 根据权利要求6所述的曲轴箱，其特征在于，相对于所述第一箱体和所述第二箱体的结合平面，所述第一箱盖与所述第一箱体的安装平面倾斜设置。
  8. 根据权利要求6所述的曲轴箱，其特征在于，还包括：第二箱盖，所述第二箱盖连接于所述第二箱体的一侧，所述第二箱盖与所述第二箱体形成有第二容置腔，所述的第二容置腔与所述第一容置腔连通。
  9. 根据权利要求8所述的曲轴箱，其特征在于，相对于所述第一箱体和所述第二箱体的结合平面，所述第二箱盖与所述第二箱体的安装平面垂直设置。
  10. 根据权利要求1所述的曲轴箱，其特征在于，所述第一箱体设置有至少两个通孔，两个所述通孔与所述曲轴腔相连通。
  11. 根据权利要求1所述的曲轴箱，其特征在于，所述第一箱体和所述第二箱体中的至少一个在所述曲轴孔的一端设置有用于对电机限位的限位部。
  12. 一种曲轴箱，其特征在于，包括：
    第一箱体；
    第二箱体，所述第二箱体连接于所述第一箱体的下方，所述第二箱体和所述第一箱体限定 出曲轴腔和曲轴孔，所述曲轴腔与所述曲轴孔连通，所述曲轴孔形成于所述第一箱体和所述第二箱体的一端；
    边盖，所述边盖连接于所述第一箱体和所述第二箱体的另一端。
  13. 根据权利要求12所述的曲轴箱，其特征在于，所述第一箱体的下侧形成有多个第一轴孔，所述第二箱体的上侧形成有多个第二轴孔，多个所述第一轴孔与多个所述第二轴孔一一对应，以适于安装曲轴。
  14. 根据权利要求13所述的曲轴箱，其特征在于，所述第一箱体的下侧形成有多个第三轴孔，所述第二箱体的上侧形成有多个第四轴孔，多个所述第三轴孔与多个所述第四轴孔一一对应，以适于安装平衡轴。
  15. 根据权利要求14所述的曲轴箱，其特征在于，所述第一轴孔、所述第二轴孔、所述第三轴孔和所述第四轴孔内部均设置有油槽。
  16. 根据权利要求12所述的曲轴箱，其特征在于，还包括：第一箱盖，所述第一箱盖连接于所述第一箱体的一侧，所述第一箱盖与所述第一箱体形成有第一容置腔。
  17. 根据权利要求16所述的曲轴箱，其特征在于，相对于所述第一箱体和所述第二箱体的结合平面，所述第一箱盖与所述第一箱体的安装平面倾斜设置。
  18. 根据权利要求16所述的曲轴箱，其特征在于，还包括：第二箱盖，所述第二箱盖连接于所述第二箱体的一侧，所述第二箱盖与所述第二箱体形成有第二容置腔，所述的第二容置腔与所述第一容置腔连通。
  19. 一种发动机，其特征在于，包括：权利要求1-18中任一项所述的曲轴箱。
PCT/CN2020/126594 2019-11-04 2020-11-04 发动机及其曲轴箱 WO2021088896A1 (zh)

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