58 results about "Exhaust manifold" patented technology

The application relates to the technical field of investment casting and discloses an exhaust manifold investment casting equipment based on a hierarchical cooling shaping structure, which comprises a mold group, a main pipe core-pulling module and a branch pipe core-pulling module, the inside of the mold group is provided with a mold cavity, and the inside of the mold group is provided with a cooling pipeline; wherein the main pipe core-pulling module comprises a sliding block one, and the side close to the mold group of the sliding block one is fixedly installed with a core-pulling block. The exhaust manifold investment casting equipment based on the hierarchical cooling shaping structure can effectively solve the problem that, in the prior art, the conventional investment casting wax injection mold usually adopts an integral fixed core-pulling structure, and when the core-pulling is performed on the main pipe end of the exhaust manifold, due to the complex inner cavity curved surface at the intersection of the main pipe and the branch pipe of the exhaust manifold, the diameter of the arc connection at the intersection is greater than the diameter of the outer end of the main pipe, the contact area between the core body of the existing core-pulling structure and the inner wall of the wax mold is large, the friction force is strong, and the inner wall of the wax mold is prone to scratching, pilling and even tearing.

The application provides a turbocharger high-pressure exhaust variable position introduction system and method. The system comprises a turbocharger, a compressor and an exhaust turbine, an exhaust end of the exhaust turbine is communicated with an exhaust end of an exhaust manifold, and an exhaust end of the compressor is communicated with an air intake end of an air intake manifold; a first introduction pipeline, an exhaust end of which is communicated with the air intake end of the air intake manifold; a second introduction pipeline, an exhaust end of which is communicated with the air intake end of the compressor; a shunt bypass, an air intake end of which is connected to a pipeline section between the exhaust end of the exhaust manifold and the air intake end of the exhaust turbine; and a controllable electromagnetic three-way valve, an air intake port of which is arranged on the shunt bypass, a first air outlet of which is connected with the air intake end of the first introduction pipeline, and a second air outlet of which is connected with the air intake end of the second introduction pipeline.

Engine system, with: an engine with a plurality of cylinders (11-14) suitable for generating a driving torque by burning fuel; a first intake manifold (31) which is connected to an intake pipe (20) through which intake air flows into a part of the majority of cylinders; a second intake manifold (32) which supplies the intake air through the first intake manifold (31) to another part of cylinders of the plurality of cylinders (11-14); a first exhaust manifold (41) which is connected to a part of the cylinders which is connected to the first intake manifold; a second exhaust manifold (42) which is connected to another part of the cylinders which is connected to the second intake manifold (32); a return line (60) branched off from the second exhaust manifold (42) to be coupled to the second intake manifold (32); a recirculation inlet valve (61) located at the point where the recirculation line (60) and the second exhaust manifold (42) are connected; and a manifold connecting valve (63) which is arranged on an inlet line (20) between the first inlet manifold (31) and the second inlet manifold (32), wherein, when some cylinders are deactivated, the recirculation inlet valve (61) is open to supply exhaust gas from the second exhaust manifold (42) to the second inlet manifold (32), and the manifold connecting valve (63) is cut off in order to prevent intake air from being supplied through the first intake manifold (31) to the second intake manifold (32), and the entire exhaust gas flow rate from the deactivated cylinders flows back into the deactivated cylinders.

This invention relates to a two-stage turbocharging series-parallel switching adjustment structure, comprising a first turbocharging system and a second turbocharging system, both of which are connected to an engine body. The engine body contains several engine cylinders and is connected to two sets of exhaust manifolds. Each set of exhaust manifolds is connected to the exhaust port of one half of the engine cylinders. The engine body is also connected to an intake manifold. This invention solves the problem that existing engine turbocharging systems are difficult to flexibly adapt to different operating conditions, and that turbocharging effect and intake efficiency are limited. By setting up a two-stage turbocharging series-parallel switching adjustment structure, flexible and precise control of engine intake pressure and intake volume under different operating conditions is achieved, significantly improving the overall performance and operating efficiency of the engine.

This invention discloses a method, apparatus, and equipment for evaluating the clamping force variation of exhaust manifold mounting bolts, relating to the field of fastener testing technology. The method includes measuring the axial force-strain relationship curves of the exhaust manifold mounting bolts at different temperatures, and the strain elongation of the bolt shank at operating temperature; combining the axial force-strain relationship curves to obtain the axial clamping force of the mounting bolt in the bolted connection at room temperature; measuring the strain elongation of the bolt shank in the bolted connection at operating temperature to obtain the residual strain elongation; and based on the residual strain elongation and the axial force-strain relationship curves, obtaining the residual axial clamping force and comparing it with the axial clamping force of the mounting bolt in the bolted connection at room temperature to evaluate the clamping force variation. This application can accurately reflect the clamping force attenuation of exhaust manifold mounting bolts under actual working conditions, improving the reliability and accuracy of measurement results.

This utility model discloses a flow-diversion and temperature control device for an automotive catalyst oxygen storage capacity evaluation bench system, belonging to the field of automotive catalyst oxygen storage capacity evaluation bench systems. The device includes an execution unit and a control unit. The execution unit is connected to the engine exhaust manifold outlet and includes a flow-diversion mechanism and a temperature control mechanism. When the engine is running, the flow-diversion mechanism diverts the engine exhaust gas source to control the exhaust gas flow rate entering the catalyst body. The temperature control mechanism is located at the inlet of the flow-diversion mechanism and is used to control the temperature of the engine exhaust gas source. The control unit controls the execution unit. This device solves the problem that conventional engine bench systems with single-pipe structures cannot adjust the exhaust flow rate during automotive catalyst oxygen storage capacity evaluation testing, and the problem of catalyst inlet temperature fluctuations caused by long stabilization times before and after rich / lean switching of the excess air coefficient, ensuring the accuracy of oxygen storage capacity testing.

This application provides an engine exhaust energy recovery system and a vehicle. The system includes a compressor, a turbine, a generator, and a battery. The turbine inlet is connected to the engine's exhaust manifold, and the turbine outlet is connected to the exhaust pipe. The compressor outlet is connected to the engine's intake manifold. The turbine and compressor are coaxially connected to form a turbocharger. The turbine is also coaxially connected to the generator, and the generator is electrically connected to the battery. When it is determined that the turbocharger does not need to intervene in engine operation, the gas output from the exhaust manifold drives the turbine drive shaft to rotate. The drive shaft drives the generator to rotate coaxially, generating electricity, which is then stored in the battery. By using the turbine to drive the generator to generate electricity and storing it in the battery when it is determined that the turbocharger does not need to intervene in engine operation, the gas that would otherwise be emitted into the atmosphere can be recovered and reused to drive the turbine and then drive the generator to generate electricity, thereby improving the utilization rate of engine exhaust gases.

This application relates to an engine cooling system and control method, belonging to the field of engine cooling technology. The system includes an engine with an exhaust manifold, a turbine, an intercooler, a main compressor, an intake manifold, a fan clutch, and a main cooling fan connected to the fan clutch. The exhaust manifold is connected to the turbine, the main compressor is coaxially connected to the turbine, and the main compressor is connected to the intercooler. The intercooler cools the compressed air from the main compressor before it is introduced into the intake manifold. The system also includes an electronic control unit (ECU), a secondary compressor coaxially connected to the turbine, and an air cooling device connected to the secondary compressor via cooling pipes. The air cooling device is installed on high-temperature components of the engine. A flow control valve is installed on the cooling pipes, and a temperature sensor is installed on the engine. The ECU is electrically connected to the fan clutch, the temperature sensor, and the flow control valve. This application can reduce the load on the main cooling fan and improve engine fuel economy.

A twin stage turbocharger arrangement 300 comprising an exhaust manifold (400,fig.4). The arrangement comprises a first turbocharger 310 and second turbocharger 320. The first and second turbochargers

The application belongs to the field of engine control, and discloses a control method for exhaust brake pressure maintenance, an engine and a vehicle, which are applied to an engine system, wherein an air inlet manifold of the engine system is respectively connected with an outlet of a compressor and an inlet of a cylinder, a throttle valve is arranged on an upstream of the air inlet manifold, an exhaust manifold is respectively connected with an outlet of the cylinder and an inlet of a turbine, an exhaust brake valve is arranged downstream of the turbine, an engine control unit is electrically connected with the turbocharger, the throttle valve and the exhaust brake valve, and the method comprises the following steps: S1, a main charge model, i.e., a dynamic exhaust manifold pressure model, is established, and the intake and exhaust are calculated by two sets of equations; S2, the main charge model is corrected; and S3, closed-loop control of a target exhaust manifold pressure is performed. Through the designed algorithm, the maximum braking power is maintained during exhaust braking by combining the transient prediction algorithm with the closed-loop control of the intake flow, and the engine components are prevented from being damaged by the excessively high exhaust pressure under the transient working condition.

An exhaust system has an exhaust pipe that extends from an exhaust manifold. The exhaust pipe has a desired bend to position adjacent the occupant compartment. An exhaust flex coupling extends from the exhaust pipe. The flex coupling is deformable. A first hanger secures the exhaust pipe to a powertrain. The first hanger is detachable from the exhaust pipe or powertrain at a desired load during an impact event. A second hanger is secured to the exhaust system adjacent the flex coupling and to a vehicle frame. The second coupling maintains integrity during the impact event.

The exhaust system includes: an exhaust manifold having multiple branch pipes and a collector; and a catalytic converter housing connected to the downstream side of the collector in the exhaust manifold. The multiple branch pipes of the exhaust manifold are configured such that the direction of the exhaust flowing into the collector forms an acute angle with respect to the axial direction of the catalytic converter housing. Furthermore, the collector is configured such that its internal space is spherical.

An overhead valve (OHV) internal combustion engine includes an engine block. Cylinder heads are mounted on the engine block. Intake and exhaust ports connect to intake and exhaust manifolds. Intake pushrod assemblies engage intake valve rocker arms and valve lifters. Exhaust pushrod assemblies engage exhaust valve rocker arms and exhaust valve lifters. One of the intake and exhaust pushrod assemblies is a jointed pushrod assembly. The jointed pushrod assembly includes an upper pushrod segment that engages one of the intake and exhaust valve rocker arms. A lower pushrod segment engages one of the respective intake and exhaust valve lifters. Complementary joint members pivotally engage each other and can include an angle of less than 180 degrees. At least one pushrod guide assembly is mounted on one of the engine block and each head, and defines at least one passage that guides the complementary joint members.

The utility model discloses a kind of all-terrain vehicles, comprising: frame, vehicle body covering, walking system and power system, power system includes engine, exhaust manifold and supercharging assembly, engine has center line and is in line on frame, engine also has air intake and exhaust port, exhaust port is equipped with exhaust port flange and is located engine rear side;Exhaust manifold is connected to exhaust port flange by exhaust manifold flange;Along the installation direction of exhaust manifold and exhaust port, supercharging assembly and exhaust port flange at least partially coincide;Exhaust port flange has a flange end face, exhaust port flange is formed with the first mounting hole that penetrates flange end face, exhaust manifold flange piece is formed with the second mounting hole, when a fastener simultaneously passes through first mounting hole and second mounting hole, exhaust manifold flange is connected to exhaust port flange by fastener;Center line and the plane where flange end face is substantially parallel, by above-mentioned setting, the exhaust efficiency of engine is higher, exhaust manifold installation is more convenient.

This utility model relates to the field of automotive exhaust manifold technology, specifically a multi-angle positioning milling fixture for exhaust manifolds. It includes a drive component, with columns symmetrically mounted on the top of the drive component. A lifting component is vertically slidably mounted on the column, and a clamping component is mounted on the lifting component. A sleeve is vertically provided on one side of the lifting component, which slides vertically with the column and can rotate on the column to adjust the angle, and is locked in place by a locking bolt. In this multi-angle positioning milling fixture for exhaust manifolds, the vertical sliding and rotational engagement of the sleeve of the lifting component with the column allows for angle adjustment, and the locking bolt enables quick fixation, meeting the multi-faceted and multi-directional milling requirements of the exhaust manifold. It avoids the cumulative errors caused by multiple clamping operations, significantly improving the machining accuracy of each port and mounting surface, effectively ensuring the power performance and exhaust emission standards after engine assembly.

The utility model relates to the technical field of silicon powder drying equipment, specifically disclose a kind of silicon powder drying tank, including heat exchange tank body, jacket, rotary drum and power mechanism, the outside of heat exchange tank body is provided with jacket, the bottom of jacket is connected with steam generating device by air intake manifold, the top of jacket is connected with exhaust manifold, the inside of heat exchange tank body is equipped with rotary drum, the outer circumferential surface of rotary drum is connected with jiaolong blade, the both ends of rotary drum shaft direction are equipped with air inlet pipe and exhaust pipe respectively, the both ends of jacket shaft direction are connected with first boom and second boom respectively, air inlet pipe and exhaust pipe are rotatably installed in the first boom and the second boom, air inlet pipe is communicated with exhaust manifold, the drying tank provided by the utility model can utilize the heat energy of hot gas twice, increase heat exchange area, and can effectively improve the drying efficiency of silicon powder.

The application discloses a kind of all-terrain vehicles, comprising: frame, body covering, walking system, power system, power system includes engine, exhaust manifold and supercharger, engine has at least two cylinder heads and is in line on frame, engine also has air inlet and exhaust port;Along the mounting direction of exhaust manifold and exhaust port, the supercharger assembly and flange piece at least partially coincide;Exhaust port flange has a flange end face, flange end face substantially extends in a predetermined plane and is formed with first connecting hole, exhaust manifold flange piece is formed with second connecting hole, when second connecting hole is aligned with first connecting hole, exhaust manifold flange is connected to exhaust port flange by fastener;Define a predetermined straight line perpendicular to flange end face, predetermined straight line and water reference plane obliquely intersect and form predetermined angle, the range of predetermined angle is 50 ° to 70 °, the setting mode can make that the exhaust manifold installation efficiency of engine is high, facilitate later maintenance.

This application relates to a novel intake and exhaust system for diesel engines and its control method. The intake and exhaust system includes an intake system, an exhaust system, and a control system. This system improves upon existing diesel engine intake and exhaust systems by installing an intake pressure sensor between the intercooler and the intake manifold in the intake system, and connecting an exhaust bypass valve to the exhaust manifold in the exhaust system. A solenoid valve and a mechanical pressure relief valve are connected in parallel to the exhaust bypass valve. The control system controls the opening degree of the solenoid valve based on the pressure signal. This system uses exhaust gas energy to drive turbocharging as its core, and combines electronic and mechanical dual-loop control to achieve dynamic balance of intake pressure. It can be widely applied to the intake and exhaust systems of diesel engines.

Provided are an exhaust manifold and an engine, which relate to a technology capable of suppressing turbulence of flow generated when exhaust gas is merged to improve thermal efficiency of an engine and improve cleanliness of exhaust gas. The exhaust manifold is an exhaust manifold of an engine having a plurality of cylinder blocks, wherein the exhaust manifold has a plurality of exhaust pipes through which exhaust gas discharged from each cylinder block flows, and a merging pipe connected to the plurality of exhaust pipes, through which the exhaust gas flowing in each exhaust pipe is merged. The merging pipe has a plurality of guide portions provided corresponding to the plurality of exhaust pipes. Each guide portion guides the exhaust gas flowing in the merging pipe from the corresponding exhaust pipe in a flow direction of the exhaust gas, and each guide portion has an opposing surface opposing an outlet of the corresponding exhaust pipe, and a portion of at least one guide portion is disposed on a downstream side of the flow direction with respect to the outlet.

Internal combustion engine, with at least one adjustable piston in an engine block (2), with an intake manifold (4) and an exhaust manifold (5), wherein hydrogen can be supplied to the internal combustion engine (1) as fuel, characterized in that the fuel is a metal hydride (MgH2) which has a carrier medium with hydrogen, wherein the fuel is stored in a fuel tank (6) and can be dissolved from the carrier medium in a hydrogen reactor (7) by supplying water, and that a water separator (13) is arranged in the exhaust manifold (5) and the separated water can be supplied to the hydrogen reactor (7).

A multi-vacuum enclosure configured to control the airflow so that the pumps and motors included therein are not exposed to excess heat. A vacuum system embodying the multi-vacuum enclosure includes a set of pump bays each including a motor and a vacuum pump driven by the motor during use. The enclosure may include at least one fan positioned proximate to an enclosure air outlet and configured to pull ambient air entering the enclosure air intake upwards both to pump air intakes of each of the vacuum pumps and around the vacuum pumps towards the enclosure air outlet. The enclosure may include an exhaust manifold configured to receive heated air expelled from pump air exhausts of each of the vacuum pumps, such that the heated air is isolated from a remainder of the interior of the enclosure and is expelled from the enclosure via an outlet of the exhaust manifold.

This invention discloses a method for centering and sealing connecting pipes in a diesel engine exhaust system, belonging to the technical field of diesel engine exhaust systems. The method includes the following steps: Step S1: Centering and installing the pulse converter onto the flywheel housing; Step S2: Installing positioning sleeves and measuring gauges on the left and right sides of the connecting pipe, replacing the standard thickness conical sealing rings. Both the positioning sleeves and measuring gauges are disc structures with a connecting end on one side; Step S3: Determining and selecting the required thickness of the conical sealing rings at each connection point in the connecting pipe; Step S4: Removing the positioning sleeves and measuring gauges, and installing the conical sealing rings of the selected thickness in Step S3 at the corresponding positions. This invention enables quick and easy selection of suitable conical sealing rings during installation based on the gap distance and centering between the exhaust bend, exhaust manifold, and pulse converter, ensuring the sealing and centering of each connection point in the connecting pipe.

The engine (1) of the present application is provided with an exhaust manifold (6), an intake manifold (5), and an EGR device (18) that supplies EGR gas from the exhaust manifold (6) to the intake manifold (5), the upper end of an EGR cooler (20) that extends downward being attached to a downwardly projecting attachment portion (62) provided to the exhaust manifold (6).

This invention provides an engine, an exhaust gas recirculation method, and a vehicle. The engine includes an engine cylinder, a turbocharger, a first exhaust gas bypass, and a first opening regulating valve. The turbocharger has an exhaust gas outlet. The engine cylinder has an intake manifold on one side and an exhaust manifold on the other. The first exhaust gas bypass is connected at one end to the turbocharger via the exhaust gas outlet and at the other end to the intake manifold, for guiding exhaust gas discharged from the turbocharger into the engine cylinder. The first opening regulating valve, located on the first exhaust gas bypass, controls the flow rate of exhaust gas entering the first exhaust gas bypass. This invention allows the bypassed exhaust gas from the turbocharger to be directly introduced into the cylinder, reducing the need for bypass valves in the turbocharger. It has a simple structure, reduces the manufacturing difficulty and cost of the turbocharger, and also reduces engine fuel consumption and improves engine thermal efficiency.

The present disclosure provides a system and method for thermal management of a battery pack of a hybrid vehicle. The system (100) comprises an air pump (118) configured to supply a compressed air flow to an exhaust manifold (108) of an internal combustion engine (104) of the vehicle, and a vortex tube (120) adapted to receive the compressed air flow and convert it into a hot air flow and a cold air flow. A plurality of valves (122) is configured to control the supply of the compressed air flow to the vortex tube (120) and the supply of the hot air flow and cold air flow to the battery pack (102). A controller (128) is configured to actuate each of the valves (122) to regulate the supply of the hot air flow or the cold air flow to the battery pack (102) based on its operating temperature.

This application relates to a heat pipe structure, a cylinder head, an engine, and a vehicle. The heat pipe structure includes an evaporation section and a condensation section. The evaporation section has a first hollow cavity, and the sidewalls of the first hollow cavity are provided with a combustion chamber heat-conducting area, an intake manifold heat-conducting area, and an exhaust manifold heat-conducting area, with the intake manifold heat-conducting area and the exhaust manifold heat-conducting area located on both sides of the combustion chamber heat-conducting area. The condensation section has a second hollow cavity, and the second hollow cavity is connected to the first hollow cavity. This application provides heat-conducting areas such as the combustion chamber heat-conducting area, the intake manifold heat-conducting area, and the exhaust manifold heat-conducting area on the evaporation section of the heat pipe structure. These areas can respectively contact the cylinder head combustion chamber, the cylinder head intake manifold, and the cylinder head exhaust manifold to achieve heat transfer. This is beneficial for improving the temperature uniformity of the area where the cylinder head combustion chamber is located in the cylinder head body, reducing the risk of engine knocking. Heat dissipation is achieved through passive phase change of the heat exchange medium, without generating additional power consumption, which is beneficial for improving engine thermal efficiency.

The application discloses a V-shaped double-cylinder exhaust manifold structure of a motorcycle, which comprises an outlet pipe, a scald-preventing cover assembly, and an exhaust manifold h-shaped assembly in communication with the scald-preventing cover assembly, wherein the exhaust manifold h-shaped assembly is configured as follows: a first inlet pipe is arranged for introducing first-cylinder exhaust gas in a first direction; a second inlet pipe is arranged for introducing second-cylinder exhaust gas in a second direction; a special-shaped pipe is arranged for connecting the first inlet pipe and the second inlet pipe; and a baffle plate is arranged at the intersection of the first inlet pipe and the special-shaped pipe, and the baffle plate is provided with a through hole; wherein the special-shaped pipe is curved to change the flow direction of the second-cylinder exhaust gas, so that the first-cylinder exhaust gas and the second-cylinder exhaust gas can converge at the baffle plate in a manner that the flow directions of the first-cylinder exhaust gas and the second-cylinder exhaust gas have a set included angle. In the application, the intersection of the two exhaust pipes forms a channel similar to the letter "h", and such a structure enables the exhaust gas from the two cylinders to be better mixed and distributed at the intersection.

Integrated exhaust manifold (10) with monolithic heat exchanger channels (40) for thermal sector coupling, characterized in that one or more fluid-flowing heat exchanger channels (40) for receiving a heat transfer fluid are integrally incorporated into the manifold wall (30) of the exhaust manifold, so that the manifold wall (30) and the heat exchanger channels (40) form a monolithic component.

To promote the vaporization of fuel mixed in oil using a simple configuration. [Solution] The internal combustion engine 10 comprises a combustion chamber 20 in which fuel is burned, a cylinder block 11 having cylinders that partition the combustion chamber 20, a cylinder head 12 fixed to the cylinder block 11 and having an exhaust port 22, an exhaust manifold 28 forming an exhaust passage 31 connected to the exhaust port 22, a manifold internal passage 34 formed around the exhaust passage 31 in the exhaust manifold 28, an oil pan 15 that communicates with the cylinder 16 and stores oil, an oil supply passage 32 that supplies oil stored in the oil pan 15 to the inside of the cylinder head 12, and an oil return passage 35 that returns the oil inside the cylinder head 12 to the oil pan 15. A part of the manifold internal passage 34 is isolated as part of the oil return passage 35.

To provide an exhaust gas treatment system, an internal combustion engine, and a catalyst module that enable easy handling and reliable after-treatment. [Solution] The exhaust gas treatment device comprises an elongated exhaust manifold extending in the longitudinal direction L and having at least one inlet for exhaust gas from each cylinder. The exhaust gas treatment device comprises a catalyst vessel containing at least two SCR catalyst elements. The exhaust manifold is fluid-connectable to the catalyst vessel, and the exhaust gas flows through the catalyst elements. The catalyst elements are arranged in at least two units parallel to the direction of exhaust gas flow and capable of flowing in the same direction, and are arranged so as not to overlap at least completely in the direction of flow. The exhaust gas treatment device comprises a main outlet pipe located at a first longitudinal end and fluid-connectable to the catalyst vessel. The exhaust gas treatment device comprises a bypass outlet pipe located at a first longitudinal end and fluid-connectable to the elongated exhaust manifold.