GB2037239A - A separable junction for an air intake system of a commercial vehicle - Google Patents
A separable junction for an air intake system of a commercial vehicle Download PDFInfo
- Publication number
- GB2037239A GB2037239A GB7940970A GB7940970A GB2037239A GB 2037239 A GB2037239 A GB 2037239A GB 7940970 A GB7940970 A GB 7940970A GB 7940970 A GB7940970 A GB 7940970A GB 2037239 A GB2037239 A GB 2037239A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cab
- driver
- junction
- inlet duct
- bracket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000011324 bead Substances 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000012858 resilient material Substances 0.000 claims description 2
- 101100494448 Caenorhabditis elegans cab-1 gene Proteins 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/073—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other characterised by special adaptations of vehicle control devices
-
- 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
- B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Body Structure For Vehicles (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Exhaust Silencers (AREA)
Abstract
<IMAGE> The engine air intake duct 4 is secured to the rear wall of the tilt cab 1 and is connected to an air filter 9 through a separable joint 13 which consists of a resilient bellows 22 connected at its lower end 23 to the air filter 9 and at its upper end 25 to a bracket 27, 28 mounted on the driver's cab 1. The bracket 27, 28 has an upper collar 29 to which a resilient sealing bead 31 is secured in a sealed manner and the lower end of the inlet duct 4 is funnel- shaped 32 and adapted to engage the bead 31 in a sealed manner. <IMAGE>
Description
SPECIFICATION
Separable junction in the air intake system of a commercial vehicle
The invention relates to a separable junction eiement in an air intake system for the supply of air to an internal combustion engine of a commercial vehicle, in which the driver's cab is resiliently mounted relative to the vehicle chassis and is also adapted to tip forwards transversely to the direction of travel and along the rear wall of which an inlet duct of the air intake system extends in the narrow space in front of the load-carrying superstructure.
In the case of the driver's cab of a commercial vehicle which is sprung relative to the vehicle chassis and which is mounted to tip about a horizontal axis extending transversely of the direction of travel, it is desirable that the air for the engine should be taken in over the roof of the driver's cab.
The indrawn air is designed to pass through the aforementioned duct which extends behind and which is mounted on the rear wall of the driver's cab, to the air filtered which is mounted on theivehicle chassis. Between the part which is mounted on the driver's cab and that which is mounted on the vehicle chassis, considerable relative movements occur as a result of the permitted spring travel of the sprung mounted driver's cab. Therefore, a resilient junction or transition element capable of accommodating relative movement must be provided in the intake duct.
In addition, a point of separation is required in the intake duct so that the driver's cab can be tilted. The junction element is therefore intended at the same time to be constructed as a separation element.
The problem resides therefore in the fact that when the driver's cab is in the normal operative position the parts of the air intake system which are associated on the one hand with the chassis and on the other with the driver's cab must be guided reliably together and a necessary sealing-tightness therebetween guaranteed against a penetration of dust and rain water of water spray. Particularly in the case of known vehicles with high load carrying superstructures which extend quite close to the driver's cab the lack of space necessitates a spacesaving oval or even flat cross-section for the intake duct and a location of the junction element in an oblique position.By virtue of the actual weight of the hose element which as a rule is produced from rubber or synthetic plastics material and which is constructed as a resilient bellows, the hose element, particularly if the ambient temperature is very warm so that the hose material has become softened, may well move out of its original working position when the driver's cab is tilted and when the junction has been broken, so that when the driver's cab is tilted back, the top and bottom parts of the junction element no longer coincide.
In the case of the hitherto known constructions employed in commercial vehicles, the "threading in" of the parts which are to be joined can often only be achieved with manual assistance as the driver's cab is tilted back. This is particularly difficult andre- quires skill and additional labour if the junction element is located on one side of the driver's cab while the actuating device for tipping the driver's cab is located on the other side thereof. Furthermore, in the case of known constructions, leaks occur at the junction due to imperfect centring and due to the fact that the parts which are pressed on one another solely by the inherent resilience of the junction element become detached from one another on poor roads which cause movement at the junction.Since in certain circumstances, the driver's cab becomes quite some distance remote from the chassis as a result of the considerable spring travels entailed in providing acceptable driver comfort, and since the chassis has different natural frequencies from the driver's cab, a fairly large gap can arise between the top and bottom parts of the junction and separation element. As a result, it is even possible during a journey on poor roads for the two parts of the junction element to become separated from each other in an undesirable fashion.
The object of the invention is to avoid these disadvantages and to propose a junction and separation element which even under extreme circumstances ensures a holding together and sealing of the two separable parts of the junction element and which furthermore ensures that after tipping of the driver's cab, satisfactory centring and sealing of the junction point takes place automatically without outside help when the driver's cab is swung back into the normal position.
According to the invention there is provided a separable junction for an inlet duct for the supply of airto an internal combustion engine of a commercial vehicle, of which the sprung driver's cab is adapted to tilt forwards transversely to the direction of travel and to the rear wall of which the inlet duct extends upwardly in the space in front of the load-carrying superstructure, the junction including a bellows formed of a resilient material, the bellows being fixed at one end to an air filter mounted on the vehicle chassis and, at its other end, being supported by a bracket mounted on the driver's cab which is resiliently supported with respect to the chassis.In this respect, the bracket may comprise a collar around which the top end of the bellows is fastened and which is connected to a strut which at its-free end is connected to the sprung console for the rear suspension of the driver's cab. As a result of this, the two separable parts of the junction element, while taking into account the sprung console of the rear driver's cab suspension, are accurately associated with each other when the driver's cab is tilted back since for accommodating and fixing the springing parts of the console with a transverse- leaf spring and a vibration damper, an accurate guidance between the driver's cab and the console associated with its rear suspension is provided, together with a substantially rigid interlocking of these parts.
In a further development of the invention, it is possible to provide on the upper free collar edge of the bracket a sealing bead and further more the bottom end of the inlet duct may be widened out to a funnel-shape so that it is expediently adapted to fit and can engage over the sealing bead. Since after the driver's cab has become interlocked with its sprung console, only negligible relative movements can occur between the lower and the upper parts of the junction, the necessary security of seal is also achieved. The considerable spring travels of the sprung driver's cab mounting are reliably accommodated only by the bellows unit which is sealed tight at both ends.
The invention will now be described in greater detail by way of example with reference to the accompanying drawings, in which:
Figure 1 is a side view of the front part of a commercial vehicle with an air intake system equipped according to the invention and in the operative position;
Figure 2 shows the same part of commercial vehicle with the driver's cab tipped forwards about a transverse axis;
Figure 3 shows on an enlarged scale a crosssection taken on the line Ill-Ill in Figure 1, and
Figure 4 shows a cross-section taken on the line
IV-IV in Figure 2.
In the front part of a commercial vehicle which is
shown in Figures 1 and 2, there is between the
driver's cab 1 and the payload carrying body 2 only a
small space 3 in which it is possible to accommodate
an air intake shaft 4 throhugh which air for the
engine 5 is drawn in over the roof 6 of the driver's
cab 1. The payload carrying body 2 is mounted on
longitudinal members 8 through intermediate mem
bers 7. On one of the longitudinal members 8 there is
also mounted an air filter 9 which is connected via a
line 11 to the engine 5. The air filter 9 is in part
located beneath the payload carrying body 2, be
cause parts of the tiltable driver's cab 1,for example
the mudguard 12, must be able to pivot freely past it.
Therefore, it is necessary that a junction and separa
tion element 13 be disposed obliquely to the vertical
and to the horizontal, so that a connection can be
made to the air intake shaft 4 which, in cross section
is a relatively flat oval.
The rear part of the driver's cab 1 which is spring
mounted at the front, on the axle 14, and which is
also pivotable about this axle, is supported through
feet 15 on springingly-resilient rubber pads 16
mounted on a console 17. This console is resiliently
supported on the longitudinal members 8 by a leaf
spring 18 and oscillation dampers 19. A separable
interlocking device 21 holds the driver's cab and the
console 17 together in the working position, as
shown in Figure 3. Before the driver's cab can be
tilted forwards this interlocking device is opened so
that the driver's cab 1 with its supporting feet 15 can
be moved away from the console 17. This separation
must also be performed by the individual parts of the
junction and separation element 13.So that this may
occur as desired and in the manner according to the
invention and so that the console 17 can also move
in respect of the longitudinal members 8, according
to the loading on its springs, the junction element 13
includes a bellows 22, the bottom end 23 of which is
fixed in a sealed manner to a filter connection 24 of
the vehicle engine air filter. The top end 25 of the
bellows 22 is sealed to a collar 26 of a bracket 27. The
bracket 27 also has a strut 28 which at its free end is connected to the sprung console 17 for the rear suspension of the driver's cab 1. A sealing bead 31 is secured to the top free collar edge 29 of the bracket 27.The bottom end of the air intake shaft 4 has a funnel-shaped widened out part 32 which is adapted to fit over the sealing bead 31 so that it can engage over the latter and, as shown in Figure 3, bear in sealing-tight fashion on the free sealing edge of the sealing bead 31.
In this way, in the operating condition a seal is provided between the bead 31 and the funnelshaped widened out part 32 which can be maintained even with considerable vibration deflections of the console 17 of the driver's cab 1, since only negligble displacements, through the resilience of the rubber cushion 16, are possible between the bracket 27 and the cab 1 and these do not adversely affect the seal at the sealing point 31/32. As Figure 4 shows, the embodiment according to the invention ensures that after a tilting forward of the driver's cab 1 and when it is set back again onto the console 17, the funnel-shaped widened out part 32 is brought to coincide with the sealing bead 31 in sealing-tight fashion without outside assistance.
Claims (5)
1. A separable junction for an inlet duct for the supply of air to an internal combustion engine of a commercial vehicle, of which the sprung driver's cab is adapted to tilt forwards transversely to the direction of travel and to the rear wall of which the inlet duct extends upwardly in the space in front of the load-carrying superstructure, the junction including a bellows formed of a resilient material, the bellows being fixed at one end to an air filter mounted on the vehicle chassis and, at its other end, being supported by a bracket mounted on the driver's cab which is resiliently supported with respect to the chassis.
2. A junction according to claim 1, wherein the bracket consists of a collar about which the top end of the bellows is fastened and which is connected to a strut, the free end of which strut is connected to a sprung console for the rear suspension of the driver's cab.
3. Ajunction according to claim 1 or 2, wherein a sealing bead is secured onto a top free collar rim of the bracket.
4. A junction according to claim 1, 2 or 3, wherein the bottom end of the inlet duct is widened out to a funnel-shaped adapted to fit and engage over the sealing bead.
5. A separable junction for an inlet duct for supplying air to an internal combustion engine of a commercial vehicle having a sprung tilt cab substantially as described herein with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2852225A DE2852225C2 (en) | 1978-12-02 | 1978-12-02 | Separable transition element in the air intake of a commercial vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2037239A true GB2037239A (en) | 1980-07-09 |
GB2037239B GB2037239B (en) | 1983-04-13 |
Family
ID=6056169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7940970A Expired GB2037239B (en) | 1978-12-02 | 1979-11-27 | Separable junktion for an air intake system or a commercial vehicle |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT380214B (en) |
CH (1) | CH641875A5 (en) |
DE (1) | DE2852225C2 (en) |
FR (1) | FR2442737A1 (en) |
GB (1) | GB2037239B (en) |
IT (1) | IT1120637B (en) |
SE (1) | SE436912B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984003133A1 (en) * | 1983-02-09 | 1984-08-16 | Volvo Ab | Seal, especially for a coupling between an air intake on a tilting truck cab and a pipe securely mounted on the chassis |
WO2001084035A1 (en) * | 2000-05-02 | 2001-11-08 | Volvo Lastvagnar Ab | Apparatus and method for sealing and locking a divisible point between a first and second channel part |
US20100147243A1 (en) * | 2008-12-17 | 2010-06-17 | Ford Global Technologies, Llc | Automotive air induction system |
WO2017211416A1 (en) * | 2016-06-09 | 2017-12-14 | Volvo Truck Corporation | A gas venting pipe |
EP3509889A4 (en) * | 2016-09-09 | 2020-07-01 | Scania CV AB | An arrangement for mounting a boil-off pipe of a liquefied gas fuel system to a vehicle |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT214525Z2 (en) * | 1988-05-17 | 1990-05-09 | Iveco Fiat | DEVICE FOR CONNECTION OF A SUCTION PIPE TO A VEHICLE AIR FILTER |
DE102010062335A1 (en) * | 2010-12-02 | 2012-06-06 | J. Eberspächer GmbH & Co. KG | vehicle component |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB869455A (en) * | 1959-02-27 | 1961-05-31 | Dowty Hydraulic Units Ltd | Improvements in pipe connections for use between coupled vehicles |
GB1361259A (en) * | 1971-11-18 | 1974-07-24 | Int Harvester Co | Gas conduits systems for engines |
AT338113B (en) * | 1976-02-25 | 1977-07-25 | Steyr Daimler Puch Ag | INTAKE AIR LINE FOR TRUCKS WITH TILTING CAB |
-
1978
- 1978-12-02 DE DE2852225A patent/DE2852225C2/en not_active Expired
-
1979
- 1979-11-21 AT AT0741179A patent/AT380214B/en not_active IP Right Cessation
- 1979-11-27 GB GB7940970A patent/GB2037239B/en not_active Expired
- 1979-11-27 IT IT50918/79A patent/IT1120637B/en active
- 1979-11-29 CH CH1062479A patent/CH641875A5/en not_active IP Right Cessation
- 1979-11-30 FR FR7929553A patent/FR2442737A1/en active Granted
- 1979-11-30 SE SE7909917A patent/SE436912B/en not_active IP Right Cessation
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1984003133A1 (en) * | 1983-02-09 | 1984-08-16 | Volvo Ab | Seal, especially for a coupling between an air intake on a tilting truck cab and a pipe securely mounted on the chassis |
WO2001084035A1 (en) * | 2000-05-02 | 2001-11-08 | Volvo Lastvagnar Ab | Apparatus and method for sealing and locking a divisible point between a first and second channel part |
US20100147243A1 (en) * | 2008-12-17 | 2010-06-17 | Ford Global Technologies, Llc | Automotive air induction system |
US8925510B2 (en) * | 2008-12-17 | 2015-01-06 | Ford Global Technologies, Llc | Automotive air induction system |
WO2017211416A1 (en) * | 2016-06-09 | 2017-12-14 | Volvo Truck Corporation | A gas venting pipe |
US10969046B2 (en) | 2016-06-09 | 2021-04-06 | Volvo Truck Corporation | Gas venting pipe |
EP3509889A4 (en) * | 2016-09-09 | 2020-07-01 | Scania CV AB | An arrangement for mounting a boil-off pipe of a liquefied gas fuel system to a vehicle |
Also Published As
Publication number | Publication date |
---|---|
FR2442737A1 (en) | 1980-06-27 |
FR2442737B1 (en) | 1983-02-25 |
IT7950918A0 (en) | 1979-11-27 |
AT380214B (en) | 1986-04-25 |
DE2852225A1 (en) | 1980-06-04 |
GB2037239B (en) | 1983-04-13 |
CH641875A5 (en) | 1984-03-15 |
IT1120637B (en) | 1986-03-26 |
DE2852225C2 (en) | 1982-07-15 |
SE7909917L (en) | 1980-06-03 |
SE436912B (en) | 1985-01-28 |
ATA741179A (en) | 1985-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |