GB2524257A - Waste gate valve of a turbocharger - Google Patents
Waste gate valve of a turbocharger Download PDFInfo
- Publication number
- GB2524257A GB2524257A GB1404784.9A GB201404784A GB2524257A GB 2524257 A GB2524257 A GB 2524257A GB 201404784 A GB201404784 A GB 201404784A GB 2524257 A GB2524257 A GB 2524257A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waste gate
- valve
- turbocharger
- shaft
- actuator
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
- F02B37/183—Arrangements of bypass valves or actuators therefor
- F02B37/186—Arrangements of actuators or linkage for bypass valves
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
-
- 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
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
A waste gate 290 for a turbocharger comprising an actuator 295 (figure 3), a housing 7 having a hole 1, inside which exhaust gas can flow, and a rotor symmetrical valve 2 (figure 5), for example a cylindrical or ball valve, internally fixed, preferably via a bushing 3, to the housing to continuously adjust the exhaust gas flow. The actuator is preferably connected to the valve by a pin 5, a lever 4 and a shaft 10. Preferably a sealing 8 is provided between the bushing and the shaft. The lever and the shaft may be welded together at an area 6. Preferably the diameter of the hole is equal to the internal diameter of the housing. Also claimed is an engine with a turbocharger comprising the waste gate. The invention mitigates abrasive wear caused by gas pulses and provides a valve with a lower required actuation force, better control and the absence of flow restriction when the valve is fully open.
Description
WASTE GATE VALVE OF A TURBOCHARGER
TECHNICAL FIELD
The present disclosure relates to a waste gate valve of a turbocharger, in particular to a vacuum actuated waste gate, but not limited to the actuator technology.
BACKGROUND
As known, the majority of internal combustion engines are turbocharged. A turbocharger, is a forced induction device used to allow more power to be produced for an engine of a given size. The benefit of a turbo is that it compresses a greater mass of intake air into the combustion chamber, thereby resulting in increased power andfor efficiency.
Turbochargers are commonly used on truck, car, train and construction equipment engines. They are popularly used with Otto cycle and Diesel cycle internal combustion engines and have also been found useful in automotive fuel cells.
As also known, a turbocharged engine system utilizes a waste gate valve, which is a valve that diverts exhaust gases away from the turbine. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the waste gate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger. The waste gate valve is controlled by an internal combustion engine controller (for example an electronic controT unit or ECU).
Current standard technology for wastegate valves is a system comprising valve and an actuator, the valve is typically a poppet valve (flap) that seals the wastegate channel thanks to an actuator force and a metal to metal contact. The waste gate actuator is in kinematics connection to the valve by means of a lever and an arm.
The gas pulses of the combustion engine on the wastegate flap lead to a vibration of the whole actuation kinematics, according to the fire frequency of the engine. Over lifetime, this movement leads to abrasive wear especially at the pin and bushing area of the waste gate valve leading to performance decay. Moreover, the pulsations on waste gate components make the control of the waste gate valve more difficult.
Therefore a need exists for a turbocharger waste gate valve, aimed to overcome the above inconvenience.
An object of an embodiment of the invention is to provide a new design of the turbocharger waste gate valve of an internal combustion engine, whose components allow not to suffer anymore of wear effects and the control of the waste gate valve is more reliable.
These objects are achieved by a waste gate valve, by a turbocharger and by an engine having the features recited in the independent claims.
The dependent claims delineate preferred and/or especially advantageous aspects.
SUMMARY
An embodiment of the disclosure provides a waste gate valve for a turbocharger of an internal combustion engine, the waste gate valve having a waste gate actuator and a waste gate channel housing, wherein the waste gate channel housing comprises a valve channel hole, inside which exhaust gas can flow, and a waste gate rotor symmetrical valve, which is internally fixed to the channel housing and continuously adjusts the exhaust gas flow, by actuation forces of the waste gate actuator, which is in kinematics connection with the waste gate rotor symmetrical valve.
An advantage of this embodiment is that the use of a rotor symmetrical valve instead of a poppet valve reduces the abrasive wear induced by the exhaust gas pressure pulsations.
Moreover, a waste gate with a rotor symmetrical valve needs a low actuation force by a standard actuation system and gets a better controllability due to a smooth behavior of the discharge coefficient of the rotor symmetrical valve vs. the opening angle.
According to an aspect of this embodiment, the rotor symmetrical valve is a cylindrical valve.
According to another aspect of this embodiment, the rotor symmetrical valve is a ball valve.
According to another embodiment, the waste gate actuator is mechanically connected to the waste gate rotor symmetrical valve by means of a pin, a lever and a shaft, which rotates the waste gate rotor symmetrical valve.
An advantage of this embodiment is that the new valve design does not imply main changes in the remaining components of the waste gate valve. In other words, both the waste gate actuator and the kinematics between actuator and valve correspond to currently adopted solutions.
According to an aspect of this embodiment, the lever and the shaft are welded together in awelding area.
According to a further embodiment, the waste gate rotor symmetrical valve is hold in place inside the waste gate channel housing by means of a bushing, which is pressed in the channel housing.
An advantage of this embodiment Is that the new valve design does not imply main changes also in the fixation of the valve in the channel housing. In other words, the new rotor symmetrical valve can be hold in place by means of a pressed in bushing element as well.
According to an aspect of this embodiment, a shaft sealing is provided between the bushing and the shaft.
According to a still further embodiment, the diameter of the valve channel hole is equal to the internal diameter of the waste gate channel housing.
An advantage of this embodiment is that the new design do not suffer any flow restriction when the rotor symmetrical valve is 100% open.
Another embodiment of the disclosure provides a turbocharger for an internal combustion engine having a waste gate valve, wherein the waste gate valve is realized according to any of the previous embodiments.
Another embodiment of the disclosure provides an internal combustion engine comprising a turbocharger, wherein the turbocharger is realized according to the previous embodiment.
BRIEF DESCRIPTION OF THE DRAWINGS
The various embodiments will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 shows an automotive system.
Figure 2 is a section of an internal combustion engine belonging to the automotive system of figure 1.
Figure 3 is a schematic overview of a turbocharged internal combustion engine.
Figure 4 shows a sketch of a cross section vertical to the channel (valve open).
Figure 5 shows a sketch of cross section along the channel (valve closed).
Figure 6 shows a sketch of cross section along the channel (valve open).
DETAILED DESCRIPTION OF THE DRAWINGS
Some embodiments may include an automotive system 100, as shown in Figures 1 and 2, that includes an internal combustion engine (ICE) 110 having an engine block 120 defining at least one cylinder 125 having a piston 140 coupled to rotate a crankshaft 145, A cylinder head 130 cooperates with the piston 140 to define a combustion chamber 150.
A fuel and air mixture (not shown) is disposed in the combustion chamber 150 and ignited, resulting in hot expanding exhaust gasses causing reciprocal movement of the piston 140.
The fuel is provided by at least one fuel injector 160 and the air through at least one intake port 210. The fuel is provided at high pressure to the fuel injector 160 from a fuel rail 170 in fluid communication with a high pressure fuel pump 180 that increase the pressure of the fuel received from a fuel source 190.
Each of the cylinders 125 has at least two valves 215, actuated by a camshaft 135 rotating in time with the crankshaft 145. The valves 215 selectively allow air into the combustion chamber 150 from the port 210 and alternately allow exhaust gases to exit through a port 220. In some examples, a cam phaser 155 may selectively vary the timing between the camshaft 135 and the crankshaft 145.
The air may be distributed to the air intake port(s) 210 through an intake manifold 200. An air intake duct 205 may provide air from the ambient environment to the intake manifold 200. In other embodiments, a throttle body 330 may be provided to regulate the flow of air into the manifold 200. In still other embodiments, a forced air system such as a turbocharger 230, having a compressor 240 rotationally coupled to a turbine 250, may be provided. Rotation of the compressor 240 increases the pressure and temperature of the air in the duct 205 and manifold 200. An intercooler 260 disposed in the duct 205 may reduce the temperature of the air. The turbine 250 rotates by receiving exhaust gases from an exhaust manifold 225 that directs exhaust gases from the exhaust ports 220 and through a series of vanes prior to expansion through the turbine 250. The exhaust gases exit the turbine 250 and are directed into an exhaust system 270. This example shows a fixed geometry turbine 250 including a waste gate 290. In other embodiments, the turbocharger 230 may be a variable geometry turbine (VGT) with a VGT actuator arranged to move the vanes to alter the flow of the exhaust gases through the turbine.
The exhaust system 270 may include an exhaust pipe 275 having one or more exhaust aftertreatment devices 280. The aftertreatment devices may be any device configured to change the composition of the exhaust gases. Some examples of aftertreatment devices 280 include, but are not limited to, catalytic converters (two and three way), oxidation catalysts, lean NOx traps, hydrocarbon adsorbers, selective catalytic reduction (SCR) systems. Other embodiments may include an exhaust gas recirculation (EGR) system 300 coupled between the exhaust manifold 225 and the intake manifold 200. The EGR system 300 may include an EGR cooler 310 to reduce the temperature of the exhaust gases in the EGR system 300. An EGR valve 320 regulates a flow of exhaust gases in the EGR system 300.
The automotive system 100 may further include an electronic control unit (ECU) 450 in communication with one or more sensors and/or devices associated with the ICE 110 and equipped with a data carrier 40.
Figure 3 is a schematic overview of a turbocharged internal combustion engine. In the scheme, other than the compressor 240 and the turbine 250, is shown the waste gate valve 2 and the electric pressure valve (EPV) 295, i.e. the waste gate actuator. The EPV determines the vacuum pressure of the air, which is fed by a vacuum pump. This negative air pressure or controlled vacuum 510 pushes against the force of a spring 500 located in the waste gate valve 290. The force scheme is shown on the bottom right of the same picture: at the spring force 550 is opposed a variable vacuum force 560. The resulting force acts on a membrane 520, which, due to its strain, moves a waste gate rod 540 up and down, allowing the waste gate valve to open and re-direct exhaust gases, so that they do not reach the turbine wheel, or to close, let the exhaust gases flowing through the turbine 250. A rod position sensor 530 can be used to control the position of the waste gate rod.
The standard configuration will be replaced by a cylindrical or spherical rotary element in the bypass channel, in other words a rotor symmetrical valve. The actuation device can remain standard comprising an actuator, a pin and a lever. The actuation angle can be up to 90°. This new solution derives from hydraulic and plumbing applications and is commonly known as ball valve.
Therefore, the proposed solution would be a cylindrical or spherical rotary element in the waste gate channel. Fig. 4 shows a sketch of a cross section, vertical to the channel, with the valve open. The waste gate valve 290 comprises a valve channel hole 1, inside which the exhaust gas can flow, a waste gate rotor symmetrical valve 2 which, according to its position, can let the gas flowing through the valve or stop the gas flow. The waste gate valve can adjust the gas flow continuously from 0% (no flow valve closed) to 100% (full flow, valve 100% open). The waste gate valve also comprises a bushing 3, which fixes the rotor symmetrical valve 2 inside a waste gate channel housing 7 (the waste gate by-pass channel), a lever 4, and a pin 5 in connection with the waste gate actuator 295, a welding area 6 between the lever and a shaft 10 and a shaft sealing 8 between the bushing and the shaft.
Figure 5 shows a sketch of a cross section along the channel, with the valve in closed position. As can be observed, inside the waste gate channel housing 7, the rotor symmetrical valve 2 is in closed position, transversal to the gas flow 9, thus blocking the gas in the waste gate channel housing.
Figure 6 shows a sketch of a cross section along the waste gate channel with the valve in open position. As can be observed, inside the waste gate channel housing 7, the rotor symmetrical valve 2 is in open position, parallel to the gas flow 9, thus allowing the gas to flow in the channel housing.
Preferably, the valve channel hole 1 has a diameter which is equal to the internal diameter of the waste gate channel housing, in order to avoid any flow restriction, when the valve is 100% open. The diameter of the valve 2 has to be chosen in a way that the remaining surface is covering the channel diameter when the valve is turned 9Q0 (100% closed position). The valve channel hole 1 and the channel geometry can have different shape (e.g. oval shape, polygonal shape). The valve seat in the waste gate channel housing 7 can be simply realized by a turning operation. The rotor symmetrical valve 2 is hold in place in the waste gate channel housing 7 by a bushing element 3, which is pressed in.
The lever 4 can be welded 6 after the bushing 3 is pressed in.
Summarizing, the present waste gate design show remarkable advantages: a low actuation force by a standard actuation system; no flow restriction when the rotor symmetrical valve is 100% open; self sealing device thanks to the exhaust backpressure; gas forces will not be induced to kinematics, thus reducing wear; higher package freedom due to installation requirements, i.e. the valve can be installed anywhere along the channel; better controllability due to a smooth behavior of the discharge coefficient of the rotor symmetrical valve vs. the opening angle.
While at least one exemplary embodiment has been presented in the foregoing summary and detailed description, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration in any way. Rather, the foregoing summary and detailed description will provide those skilled in the art with a convenient road map for implementing at least one exemplary embodiment, it being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope as set forth in the appended claims and their legal equivalents.
REFERENCE NUMBERS
I valve channel hole 2 wastegate rotor symmetrical valve 3 bushing 4 lever pin 6 welding area 7 wastegate channel housing 8 shaft sealing 9 gas flow in the wastegate channel housing waste gate shaft data carrier automotive system 110 internal combustion engine engine block cylinder cylinder head camshaft 140 piston crankshaft combustion chamber cam phaser fuel injector 165 fuel injection system 1].
fuel rail fuel pump fuel source intake manifold 205 air intake dud 210 intake port 215 valves 220 port 225 exhaust manifold 230 turbocharger 240 compressor 245 turbocharger shaft 250 turbine 260 intercooler 270 exhaust system 275 exhaust pipe 280 aftertreatment devices 290 waste gate valve 295 waste gate actuator 300 exhaust gas recirculation system 310 EGR cooler 320 EGR valve 330 throttle body 340 mass airflow, pressure, temperature and humidity sensor 350 manifold pressure and temperature sensor 360 combustion pressure sensor 380 coolant temperature and level sensors 385 lubricating oil temperature and level sensor * 390 metal temperature sensor * 5 400 fuel rail digital pressure sensor 410 cam position sensor 420 crank position sensor 430 exhaust pressure and temperature sensors 440 EGR temperature sensor 445 accelerator position sensor 446 accelerator pedal 450 ECU 500 waste gate spring 510 controlled vacuum 520 membrane 530 rod position sensor 540 waste gate rod 550 spring force 560 variable vacuum force
Claims (10)
- CLAIMS1. Waste gate valve (290) for a turbocharger (230) of an internal combustion engine (110), the waste gate valve having a waste gate actuator (295) and a waste gate channel housing (7), wherein the waste gate channel housing comprises a valve channel hole (1), inside which exhaust gas can flow, and a waste gate rotor symmetrical valve (2), which is internally fixed to the channel housing (7) and continuously adjusts the exhaust gas flow, by actuation forces of the waste gate actuator (295), which is in kinematics connection with the waste gate rotor symmetrical valve.
- 2. Waste gate valve according to claim 1, wherein the waste gate rotor symmetrical valve (2) is a cylindrical valve.
- 3. Waste gate valve according to claim 1, wherein the waste gate rotor symmetrical valve (2) is a ball valve.
- 4. Waste gate valve according any of the preceding claims, wherein the waste gate actuator (295) is mechanically connected to the waste gate rotor symmetrical valve (2) by means of a pin (5), a lever (4) and a shaft (10), which rotates the waste gate rotor symmetrical valve.
- 5. Waste gate valve according to claim 4, wherein the lever (4) and the shaft (10) are welded together in a welding area (6).
- 6. Waste gate valve according to any of the preceding claims, wherein the waste gate rotor symmetrical valve (2)is hold in place inside the waste gate channel housing (7) by means of a bushing (3), which is pressed in the channel housing (7).
- 7. Waste gate valve according to claim 6, wherein a shaft sealing (8) is provided between the bushing (3) and the shaft (10).
- 8. Waste gate valve according to any of the preceding claims, wherein the diameter of the valve channel hole (1) is equal to the internal diameter of the wastegate channel housing (7).
- 9. Turbocharger (230) for an internal combustion engine (110) having a waste gate valve (290), wherein the waste gate valve is realized according to any of the preceding claims.
- 10. Internal combustion engine (110) comprising a turbocharger (230), wherein the turbocharger is realized according to claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1404784.9A GB2524257A (en) | 2014-03-17 | 2014-03-17 | Waste gate valve of a turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1404784.9A GB2524257A (en) | 2014-03-17 | 2014-03-17 | Waste gate valve of a turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201404784D0 GB201404784D0 (en) | 2014-04-30 |
| GB2524257A true GB2524257A (en) | 2015-09-23 |
Family
ID=50634935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1404784.9A Withdrawn GB2524257A (en) | 2014-03-17 | 2014-03-17 | Waste gate valve of a turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2524257A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632361A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Control mechanism for waste gas bypass valve of turbocharger |
| WO2017142846A1 (en) * | 2016-02-18 | 2017-08-24 | Borgwarner Inc. | Wastegate mechanism and method of making and using the same |
| US20180291800A1 (en) * | 2014-10-27 | 2018-10-11 | Audi Ag | Exhaust-gas turbo charger for an internal combustion engine, and method for producing an exhaust-gas turbocharger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3735736A1 (en) * | 1987-10-22 | 1989-05-03 | Porsche Ag | Device for controlling a turbosupercharger set |
| WO2009030914A2 (en) * | 2007-09-05 | 2009-03-12 | Cummins Turbo Technologies Limited | Multi-stage turbocharger system |
| GB2475534A (en) * | 2009-11-21 | 2011-05-25 | Cummins Turbo Tech Ltd | Sequential two-stage turbocharger system |
| EP2733325A1 (en) * | 2012-11-14 | 2014-05-21 | Caterpillar Motoren GmbH & Co. KG | Throttle valve for internal combustion engines |
-
2014
- 2014-03-17 GB GB1404784.9A patent/GB2524257A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3735736A1 (en) * | 1987-10-22 | 1989-05-03 | Porsche Ag | Device for controlling a turbosupercharger set |
| WO2009030914A2 (en) * | 2007-09-05 | 2009-03-12 | Cummins Turbo Technologies Limited | Multi-stage turbocharger system |
| GB2475534A (en) * | 2009-11-21 | 2011-05-25 | Cummins Turbo Tech Ltd | Sequential two-stage turbocharger system |
| EP2733325A1 (en) * | 2012-11-14 | 2014-05-21 | Caterpillar Motoren GmbH & Co. KG | Throttle valve for internal combustion engines |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180291800A1 (en) * | 2014-10-27 | 2018-10-11 | Audi Ag | Exhaust-gas turbo charger for an internal combustion engine, and method for producing an exhaust-gas turbocharger |
| US10890107B2 (en) * | 2014-10-27 | 2021-01-12 | Audi Ag | Exhaust-gas turbo charger for an internal combustion engine, and method for producing an exhaust-gas turbocharger |
| CN104632361A (en) * | 2015-02-12 | 2015-05-20 | 广西玉柴机器股份有限公司 | Control mechanism for waste gas bypass valve of turbocharger |
| CN104632361B (en) * | 2015-02-12 | 2017-03-01 | 广西玉柴机器股份有限公司 | A kind of controlling organization of the exhaust gas by-pass valve of turbocharger |
| WO2017142846A1 (en) * | 2016-02-18 | 2017-08-24 | Borgwarner Inc. | Wastegate mechanism and method of making and using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201404784D0 (en) | 2014-04-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |