US20080011541A1 - Internal combustion engine - Google Patents
Internal combustion engine Download PDFInfo
- Publication number
- US20080011541A1 US20080011541A1 US11/822,481 US82248107A US2008011541A1 US 20080011541 A1 US20080011541 A1 US 20080011541A1 US 82248107 A US82248107 A US 82248107A US 2008011541 A1 US2008011541 A1 US 2008011541A1
- Authority
- US
- United States
- Prior art keywords
- exhaust
- intake
- leg
- internal combustion
- line
- 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.)
- Abandoned
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000567 combustion gas Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/06—Silencing apparatus characterised by method of silencing by using interference effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/22—Silencing apparatus characterised by method of silencing by using movable parts the parts being resilient walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10137—Flexible ducts, e.g. bellows or hoses
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
- F02M35/116—Intake manifolds for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1244—Intake silencers ; Sound modulation, transmission or amplification using interference; Masking or reflecting sound
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1272—Intake silencers ; Sound modulation, transmission or amplification using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes
Definitions
- the present invention relates to an internal combustion engine with an engine block that has at least one cylinder, on the intake side of which intake manifold pipes are provided and on the exhaust side of which exhaust manifold pipes are provided.
- the intake manifold pipes branch off from an intake line and the exhaust manifold pipes open into an exhaust collection line.
- a fuel-air mixture can be supplied over the intake line and the combustion gases can be expelled, especially to a muffler and tailpipe.
- Internal combustion engines that are used for driving vehicles have one or more combustion chambers, to which fresh gas or in general a fuel-air mixture is supplied, which is introduced to the combustion chambers via an intake line, from which a number of intake pipes corresponding to the number of combustion chambers lead to each of the combustion chambers.
- intake line from which a number of intake pipes corresponding to the number of combustion chambers lead to each of the combustion chambers.
- each combustion chamber is followed by a manifold pipe that opens into an exhaust gas line, which leads to a muffler device.
- “Fuel” is defined as a fluid that is burned in the combustion chamber in gaseous form or as a type of aerosol and serves to drive the pistons of the internal combustion engine.
- sound damping is accomplished by a dedicated sound damping unit assigned to the exhaust gas pipe or the exhaust gas line.
- the adaptation of the engine noise, as this may generally be called, to possible wishes of the customer is performed by suitable length and cross-section dimensioning of the exhaust pipe into which the exhaust manifolds open.
- FIGURE shows a schematic front view of an internal combustion engine.
- the internal combustion engine 10 has four cylinders 11 , 12 , 13 , 14 , to which intake manifold pipes 15 , 16 , 17 , 18 lead, which branch off from an intake pipe 19 to the individual cylinders 11 , . . . 14 .
- intake manifold pipes 15 , 16 , 17 , 18 lead, which branch off from an intake pipe 19 to the individual cylinders 11 , . . . 14 .
- each cylinder 11 , . . . 14 is followed by exhaust manifold pipes 20 , 21 , 22 , 23 , which open into an exhaust gas collection line 24 , which leads to a muffler or simply to a tailpipe.
- the membrane 29 transfers sound from the intake side to the exhaust side and vice-versa, wherein gas flow from one side to the other side, i.e., from the intake side to the exhaust side and vice-versa, is prevented.
- the pulsating noises present in the area of the exhaust line 24 can be influenced additionally, in that by means of suitable acoustic filters, the harmonic spectrum is modified as the vehicle user wishes.
- the invention has been described on the basis of a four-cylinder engine. In the same way, influencing of one side by the other side respectively can be accomplished even in the case of engines that have more or less than four cylinders.
- the connection between exhaust and intake sides can also take place in a great variety of ways and at different positions of intake 25 and exhaust 26 systems, wherein the energy is greater, the closer to the engine 10 ; gas-tightness and the presence of an acoustically active partition or membrane between the two sides for preventing gas flow from one side to the other are essential.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
An internal combustion engine is provided, on an intake side of which intake manifold pipes are provided and on an exhaust side, exhaust manifold pipes. The intake manifold pipes and the exhaust manifold pipes are connected gas-tight via an acoustically permeable membrane.
Description
- This nonprovisional application claims priority under 35 U.S.C. § 119(a) to German Patent Application No. DE 20 2006 010 537, which was filed in Germany on Jul. 8, 2006, and which is herein incorporated by reference.
- 1. Field of the Invention
- The present invention relates to an internal combustion engine with an engine block that has at least one cylinder, on the intake side of which intake manifold pipes are provided and on the exhaust side of which exhaust manifold pipes are provided. The intake manifold pipes branch off from an intake line and the exhaust manifold pipes open into an exhaust collection line. A fuel-air mixture can be supplied over the intake line and the combustion gases can be expelled, especially to a muffler and tailpipe.
- 2. Description of the Background Art
- Internal combustion engines that are used for driving vehicles have one or more combustion chambers, to which fresh gas or in general a fuel-air mixture is supplied, which is introduced to the combustion chambers via an intake line, from which a number of intake pipes corresponding to the number of combustion chambers lead to each of the combustion chambers. On the exhaust side, each combustion chamber is followed by a manifold pipe that opens into an exhaust gas line, which leads to a muffler device. “Fuel” is defined as a fluid that is burned in the combustion chamber in gaseous form or as a type of aerosol and serves to drive the pistons of the internal combustion engine.
- At least two problems can be considered for the design of these intake and exhaust devices. On one hand, specifications, for example in the highway or air pollution laws, require an adequate reduction of the noise produced during combustion, so that the environment will not be too heavily burdened by the combustion noises and the noise that arises during exhaust discharge because of the pulsating combustion. On the other hand, it is known that internal combustion engines with different numbers of cylinders produce different sounds and that sometimes customers would like for an engine, for example, with four cylinders to sound as if it were a six- or eight-cylinder engine.
- Typically, sound damping is accomplished by a dedicated sound damping unit assigned to the exhaust gas pipe or the exhaust gas line. The adaptation of the engine noise, as this may generally be called, to possible wishes of the customer is performed by suitable length and cross-section dimensioning of the exhaust pipe into which the exhaust manifolds open.
- It is therefore an object of the present invention to provide an additional possibility for influencing the engine noise.
- This object is accomplished in that the intake and exhaust lines are coupled together in an acoustically permeable and gas-tight manner.
- Thus in accordance with an embodiment of the invention, the intake pipe is coupled with the exhaust pipe in an acoustic and gas-tight manner, wherein only an acoustic exchange, but not a gas exchange is to take place. In other words, the intake noises supplement the tailpipe noises present in the exhaust line and/or influence them by interference, or vice versa.
- The two pipelines are coupled together with interpolation of an elastic partition. The partition serves to prevent gas flow from one side to the other side, i.e., from the intake side and exhaust side or vice-versa.
- The partition can preferably be formed as an elastic membrane from a heat-resistant material that is not damaged by the exhaust temperatures.
- The invention and additional embodiments and improvements of the invention as well as additional advantages will be explained and described in greater detail based on the drawings.
- Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
- The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein the FIGURE shows a schematic front view of an internal combustion engine.
- The
internal combustion engine 10 has fourcylinders manifold pipes intake pipe 19 to theindividual cylinders 11, . . . 14. On the exhaust side, eachcylinder 11, . . . 14 is followed byexhaust manifold pipes gas collection line 24, which leads to a muffler or simply to a tailpipe. - Both in the
intake line 19 and in theexhaust line 24, during operation, intake and tailpipe noises are present, which are pulsating and because of their loudness are perceived as highly annoying. The tailpipe noises are necessarily considerably louder than those in the intake area because of the internal combustion processes in the combustion chamber. - For modulating the intake and exhaust gas noises, the intake and
exhaust gas pipes internal combustion engine 10 on the carburetor or muffler side, based on the connecting line of the cylinders, each have assigned aconnecting line extension pipes membrane 29. - Because of its elasticity, the
membrane 29 transfers sound from the intake side to the exhaust side and vice-versa, wherein gas flow from one side to the other side, i.e., from the intake side to the exhaust side and vice-versa, is prevented. - With this transfer of sound especially from the intake side to the exhaust side, the pulsating noises present in the area of the
exhaust line 24 can be influenced additionally, in that by means of suitable acoustic filters, the harmonic spectrum is modified as the vehicle user wishes. - The invention has been described on the basis of a four-cylinder engine. In the same way, influencing of one side by the other side respectively can be accomplished even in the case of engines that have more or less than four cylinders. The connection between exhaust and intake sides can also take place in a great variety of ways and at different positions of
intake 25 andexhaust 26 systems, wherein the energy is greater, the closer to theengine 10; gas-tightness and the presence of an acoustically active partition or membrane between the two sides for preventing gas flow from one side to the other are essential. - The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.
Claims (9)
1. An internal combustion engine comprising:
an engine block having at least one cylinder;
intake manifold pipes being provided on an intake side of the cylinder, the intake manifold pipes branching off from an intake line, and over the intake line a fuel-air mixture is supplied;
exhaust manifold pipes being provided on an exhaust side of the cylinder, the exhaust manifold pipes opening into an exhaust gas collection line, and over the exhaust line combustion gases are removed towards a muffler and/or tailpipe; and
wherein the intake line and the exhaust line are connected together together in an acoustically permeable and gas-tight manner
2. The internal combustion engine according to claim 1 , wherein the intake line and the exhaust lines are connected together gas-tight by an elastic partition or membrane.
3. The internal combustion engine according to claim 1 , wherein, to the intake and exhaust lines on a side of the engine block, extension pipes are respectively connected, free ends of which are connected together by a partition or membrane.
4. The internal combustion engine according to claim 3 , wherein the extension pipes are welded together with the partition or membrane.
5. An exhaust system comprising:
an intake leg configured to provide at least one cylinder of an internal combustion engine with a fuel-air mixture;
an exhaust leg configured to direct exhaust gases from the at least one cylinder towards an exit area of the exhaust system; and
a connecting member provided between a connection of the intake leg and the exhaust leg for facilitating sound waves from the intake leg to pass through towards the exhaust leg, and for preventing the exhaust gases from the exhaust leg to pass through towards the intake leg.
6. The exhaust system according to claim 5 , wherein the connecting member is an elastic membrane.
7. The exhaust system according to claim 6 , wherein an amount of sound waves that pass from the intake leg to the exhaust leg is based on an elasticity of the elastic membrane.
8. The exhaust system according to claim 5 , wherein the sound waves from the intake leg alter perceived acoustics of the exhaust system.
9. The exhaust system according to claim 5 , wherein the connecting member is only permeable to sound waves.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEDE202006010537 | 2006-07-08 | ||
DE202006010537U DE202006010537U1 (en) | 2006-07-08 | 2006-07-08 | Combustion engine for a vehicle comprises an intake line coupled with an exhaust gas line in an acoustically permeable and gas-tight manner |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080011541A1 true US20080011541A1 (en) | 2008-01-17 |
Family
ID=37295891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/822,481 Abandoned US20080011541A1 (en) | 2006-07-08 | 2007-07-06 | Internal combustion engine |
Country Status (2)
Country | Link |
---|---|
US (1) | US20080011541A1 (en) |
DE (2) | DE202006010537U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016148326A (en) * | 2015-02-10 | 2016-08-18 | ドクター エンジニール ハー ツェー エフ ポルシェ アクチエンゲゼルシャフトDr. Ing. h.c. F. Porsche Aktiengesellschaft | Control device for uniformly distributing gas and/or liquid between at least two containers |
-
2006
- 2006-07-08 DE DE202006010537U patent/DE202006010537U1/en not_active Expired - Lifetime
-
2007
- 2007-05-12 DE DE102007022350A patent/DE102007022350A1/en not_active Withdrawn
- 2007-07-06 US US11/822,481 patent/US20080011541A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016148326A (en) * | 2015-02-10 | 2016-08-18 | ドクター エンジニール ハー ツェー エフ ポルシェ アクチエンゲゼルシャフトDr. Ing. h.c. F. Porsche Aktiengesellschaft | Control device for uniformly distributing gas and/or liquid between at least two containers |
Also Published As
Publication number | Publication date |
---|---|
DE202006010537U1 (en) | 2006-10-12 |
DE102007022350A1 (en) | 2008-01-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HEINRICH GILLET GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GARCIA, PATRICK;FUHRMANN, BERND;KONOPINSKY, MYKOLA;REEL/FRAME:019885/0204 Effective date: 20070709 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |