CN1814494B

CN1814494B - Single-track vehicle

Info

Publication number: CN1814494B
Application number: CN 200510064194
Authority: CN
Inventors: F·拉姆波克
Original assignee: AVL List GmbH
Current assignee: AVL List GmbH
Priority date: 2005-02-05
Filing date: 2005-02-05
Publication date: 2010-12-08
Anticipated expiration: 2025-02-05
Also published as: CN1814494A

Abstract

The invention relates to the single track vehicle with gas engine including at most one gas crock inclining in the direction of converse driving, at most one gas enter valve used for controlling at most one gas receiving valve (30) of entering air flow of gas receiving channel (34a, 34b) and at most one exhausting valve used for controlling one exhausting valve (31) of exhausting flow of gas exhausting channel (36), gas receiving valve (30)is above the exhausting valve which is controlling by one valve rocker. To improve the burning, blowing and washing, mixing of the gas engine, the part of at most one Gas receiving channel is basically in the direction of the axes of the gas jar, the form of the air receiving channel can bring the reverse roller airflow in the firebox, the reverse roller airflow goes from the air receiving hole (35A, 35B) of air receiving channel (34a, 34b) to piston and advances to the direction of the exhausting hole (36a) of the exhausting channel.

Description

Single-track vehicle

Technical field

The present invention relates to a kind of single-track vehicle, this vehicle has a combustion engine, this combustion engine has at least one and is arranged to against working direction bevelled cylinder, this cylinder has the air inlet valve of at least one charge flow that is used to control at least one free air diffuser and at least one is used to control the air outlet valve that air-flow of at least one outlet passageway, air inlet valve is arranged on the top of air outlet valve, and air outlet valve is controlled by a valve arm.

Background technology

Have in the motor bike of a bent axle that is provided with perpendicular to working direction at driving engine, cylinder turns forward on working direction usually.Driving device is arranged on behind the driving engine usually and before the trailing wheel, can helps transmission of power like this.In the motor scooter field, for the very low motor bike of the clearance envelope between the sort of handlebar and the vehicle seat,, will exist the problem that is difficult to dismounting if having this structure, particularly all the more so for the big driving engine of stroke volume.Especially for stepless transmission, that is, and so-called automatic speed changing, the problem especially severe of layout.

DE3601273A discloses a kind of cross-country motorcycle, and it has a cylinder that roughly extends back.In this known scheme, this layout is used to obtain long as far as possible trailing wheel vibration balancing bar, will improve rideability like this.In the cross-country motorcycle of describing in the document, driving engine is provided with as far as possible forward, the load that makes front-wheel obtain adding is favourable.

US5305720A discloses a kind of combustion engine, and its free air diffuser causes a kind of oppositely directed roll-type air-flow (the reverse stream that rolls) in combustion chamber.This oppositely directed roll-type air-flow can improve under the situation of purge, particularly poor combustion of mixing, burning and combustion chamber.AT5647U1 discloses a kind of combustion engine, and it has outer igniting and reverse roll-type air-flow.

Summary of the invention

Task of the present invention is to make the described the sort of vehicle of beginning can realize fuel-efficient especially and operation scheme environmental protection.Another task of the present invention improves the traveling comfort of advancing.

According to the present invention, this task is finished like this, at least one free air diffuser local at least along cylinder axis to setting, its shape makes and cause a kind of reverse roll-type air-flow in combustion chamber, being oriented to of this reverse roll-type air-flow, point to piston from the induction opening of free air diffuser, and and then point to the deflation hole of exhaust passage.Can obviously improve the purge of mixing, burning and combustion chamber by this reverse roll-type air-flow.

For motor bike, the blow off valve of controlling by a valve arm combines with the cylinder that is provided with backward, can make air inlet design advantageous particularly, cylinder head can be provided with backward, even be set to the place ahead of trailing wheel.The system height of the cylinder head in the zone of the most close trailing wheel is reduced.

Combining therewith particularly preferably is, and air inlet valve is by the camshaft direct control of putting on.Because air inlet valve is provided with higherly, thus the inhead type camshaft can be set, and do not conflict with trailing wheel.

If the V-shaped mutual inclination of these valves, and the free air diffuser that intake ﹠ exhaust valves are only seen leads to cylinder, then can obtain a kind of particularly advantageous air inlet system.What relate to here is the reverse stream device that rolls of a kind of what is called, and it produces a kind of eddy current in combustion chamber, and the axle of this eddy current is substantially perpendicular to cylinder-bore axis.By oppositely directed roll-type air-flow, the purge of mixing, burning and combustion chamber is improved, particularly under the situation of poor combustion.Can stipulate at least one free air diffuser and the Plane intersects that constitutes by cylinder-bore axis and crankshaft center line at this.

If at least one induction opening and air gate are symmetrical in the driving engine Transverse plane perpendicular to bent axle, then can obtain best space utilization, two free air diffusers preferably are set, this two free air diffuser extends from a common outlet passageway.

In another form of implementation of the present invention, the suspension of combustion engine on vehicle realizes that by means of at least one curved bar combustion engine roughly tangentially acts on the sense of motion of this curved bar.Preferably, curved bar roughly is 90 ° ± 50 ° with cylinder.Like this, avoided roughly tangentially acting on antagonistic force on the curved bar, avoided this power biography on the vehicle frame of motor bike, thereby can realize vibrationless operation owing to what burning produced.

Description of drawings

Describe the present invention in detail below in conjunction with accompanying drawing.

Fig. 1 is the lateral plan according to motor bike of the present invention.

Fig. 2 is a thin portion among Fig. 1.

Fig. 3 is for passing a cross section of the combustion engine of motor bike along the III-III line among Fig. 2.

In Fig. 1, only clearly show that main portion according to motor bike of the present invention.

The specific embodiment

This motor bike 1 has the structure of motor scooter, that is, the clearance envelope 2 between its handlebar and the vehicle seat is lower.The combustion engine 3 of motor bike is positioned under the seat 4 of not shown chaufeur.Present embodiment relates to the single cylinder four-stroke internal combustion engine, and each cylinder 5 has three valves.The cylinder 5 of combustion engine 3 is provided with backward, and the axis 6 of cylinder is horizontal by 30 ° to 40 ° angles.In order to make wheelspan short as far as possible and limit the clearance envelope between handlebar and the vehicle seat 2 low as far as possible, make the trailing wheel 8 of the cylinder head 7 as close as possible motor bikes 1 of combustion engine 3.Numbering 8a represents the length of shock strut.

Combustion engine 3 is captiveed joint with trailing wheel vibration balancing bar 40, and the latter is supported on the vehicle frame 1a of motor bike 1 through a curved bar 40a.The axis of curved bar 40a marks with 41.Hinge between trailing wheel vibration balancing bar 40 and the curved bar 40a is represented with 40b.Curved bar 40a and cylinder 5 are provided with like this, that is, the mass force of the parts of hunting motion roughly tangentially acts on the curved bar 40a, thereby make the vehicle frame 1a of motor bike 1 not have power to import.Angle beta between curved bar 40a and the cylinder 5 is roughly 90 ° ± 50 °.

At length show the combustion engine 3 of motor bike 1 among Fig. 2.Two air inlet valves 30 are directly by 32 controls of an inhead type camshaft.Blow off valve 31 is by a curved bar 33 controls, and this curved bar is connected with camshaft 32 runnings.Can make cylinder head 7 very low in the zone of trailing wheel 8 like this, thereby make scantling length very short.Air intake passage 34 is between air inlet valve 30 and blow off valve 31, in the scope of cylinder-bore axis 6.One carburetter 39 is set in air intake passage 34.

Before will entering cylinder 5, common air intake passage is divided into two

free air diffuser

34a, 34b, and

free air diffuser

34a, 34b respectively lead to the induction opening 35a, the 35b that are controlled by an air inlet valve 30 respectively.Induction opening 35a, 35b and deflation hole 36a at least roughly are symmetrical in a driving engine Transverse plane 42 perpendicular to crankshaft center line 37a.

Free air diffuser

34a, 34b form in cylinder 7 like this,, cause an oppositely directed roll-type air-flow in combustion chamber 5a that is, and it is also further advanced to deflation hole 36a to piston 9 by induction opening 35a, 35b.

Free air diffuser

34a, 34b part at least are roughly parallel to cylinder-bore axis 6.

In

free air diffuser

34a, 34b or the common exhaust passage 34 at least one can intersect with the driving engine plane 38 that is limited by cylinder-bore axis 6 and crankshaft center line 37a.Like this, in combustion chamber 5a, can produce a very strong reverse roll-type air-flow.

Bent axle 37 drives the camshaft 32 of upper support through a draw gear 39.Side at bent axle 37 is provided with actuator and electrical generator 11, is provided with a belt pulley 12 that is used for continuously variable transmittion 13 at opposite side.A centnifugal force control apparatus 14 is set, is used for moving increasing by the half belt pulley 12b that the half belt pulley 12a that can move in the axial direction under the situation of revolution fixes on axially, like this, just strengthened the rolling diameter of traction belts 15.Belt pulley 12 is supported on first transmission shaft 16, this transmission shaft and bent axle 37 one.

Traction belts 15 drives one second belt pulley 17, and this belt pulley is supported on second transmission shaft 18.Belt pulley 17 comprises half belt pulley 17a of an axial restraint, and one movably half belt pulley 17b roof pressure is thereon on axially.Pressure is produced by a coil spring 19.Combination engine-driving device that second transmission shaft 18 is made of many parts-case supports.Torque on the transmission shaft 18 is directly passed to one and trailing wheel 18 bonded assembly transmission shafts 22 by gear and through a tween drive shaft 21.

As shown in Figure 2, the below is led in exhaust passage 36, and a dontake pipe that is connected on 36 back, exhaust passage directly is communicated in the freeing pipe.

The present invention makes a kind of transmission theory of motor scooter become possibility.In the present embodiment, the stroke volume of combustion engine 3 is roughly 50ccm.

Claims

1. the single-track vehicle that has a combustion engine, it has at least one against travel direction bevelled cylinder (5), at least one is used to control at least one free air diffuser (34a, the air inlet valve of charge flow 34b) (30) and at least one are used to control the blow off valve (31) of the combustion gas flow of at least one exhaust passage (36), air inlet valve (30) is arranged on the top of blow off valve (31), blow off valve is controlled by a valve arm (33), it is characterized in that: at least one free air diffuser (34a, 34b) part is arranged on the direction of cylinder-bore axis (6) at least, its shape makes and causes oppositely directed roll-type air-flow in the combustion chamber (5a), this roll-type air-flow is by free air diffuser (34a, induction opening (35a 34b), 35b) also further be orientated to the deflation hole (36a) of exhaust passage (36) to piston (9), combustion engine is suspended on the vehicle by means of at least one curved bar (40a), and curved bar (40a) is 90 ° ± 50 ° angles with cylinder-bore axis (6).

2. vehicle as claimed in claim 1 is characterized in that: air inlet valve (30) is by camshaft (32) direct control of putting on.

3. vehicle as claimed in claim 1 is characterized in that: air inlet valve (30) is the V shape with blow off valve (31) and tilts mutually.

4. vehicle as claimed in claim 1 is characterized in that: at least one free air diffuser (34a, 34b) leads to cylinder (5) between air inlet valve (30) and blow off valve (31).

5. vehicle as claimed in claim 1 is characterized in that: at least one induction opening (35a, 35b) and a deflation hole (36a) are symmetrical in the driving engine Transverse plane (42) perpendicular to crankshaft center line (37a).

6. vehicle as claimed in claim 1 is characterized in that: intersect on the driving engine plane (38) that at least one free air diffuser and is limited by cylinder-bore axis (6) and crankshaft center line (37a).

7. vehicle as claimed in claim 1 is characterized in that: be provided with two free air diffusers (34a, 34b), this two free air diffuser (34a, 34b) is extended by a common air intake passage (34).