Abstract: An EGR system is configured to allow a part of exhaust gas discharged from an engine to an intake passage to flow as EGR gas to an intake passage through an EGR passage to return to the engine. In the EGR system, a heating film is provided on an inner wall or an outer wall of at least one of the intake passage through which the EGR gas is allowed to flow and the EGR passage. At least a pair of a positive electrode and a negative electrode is provided to energize the heating film.

Abstract: A work vehicle includes an engine, an intake passage through which combustion air flows from an ambient air inlet to an engine, an air cleaner for removing dust contained in the combustion air, a throttle valve for adjusting an intake amount of the combustion air by the engine, a blowby gas returning passage for returning blowby gas discharged from the engine to a mid portion of the intake passage, and an inclined passage portion that assumes a progressively downwardly inclined posture to be located at a lower position on downstream side in a flow direction, the inclined passage portion having a water draining portion at its lowermost end.

Abstract: This air intake apparatus includes an air intake apparatus body including an intake air passage and an external gas passage portion provided as a structure separate from the air intake apparatus body inside the air intake apparatus body, the external gas passage portion through which external gas can be introduced into the intake air passage.

Abstract: An engine system includes an exhaust manifold, an exhaust flow having a valve configured to release exhaust gas, and stratified layers defining an integrated intake manifold and an exhaust gas recirculator including a tubular inlet on an exterior of the intake manifold. The inlet defines at least one branch extending into an interior of the intake manifold without a seal between the exhaust gas recirculator and manifold. The at least one branch extends into at least one wing to form a duct containing a plurality of nozzles protruding from the duct into the interior.

Abstract: A system includes one or more processors configured to be operably coupled to a vehicle system configured to travel along a route during a trip. The vehicle system has a vehicle particulate filter (VPF) disposed within an exhaust passage of the vehicle system. The one or more processors are configured to determine, based on trip information about the trip of the vehicle system, one or more regeneration-incompatible (RI) portions of the trip. The RI portions are associated with operating conditions of the vehicle system that are unsuitable for contemporaneous active regeneration of the VPF. The one or more processors are further configured to schedule an active regeneration (AR) event for the vehicle system based on the one or more RI portions of the trip. The AR event occurs during a regeneration portion of the trip.

Abstract: An intake air control apparatus of an engine includes a housing having an intake air inflow passage for receiving external air, an exhaust gas inflow passage for receiving recirculated exhaust gas, and an intake air supply passage for supplying the external air from the intake air inflow passage or the exhaust gas from the exhaust gas inflow passage to the engine. A motor gear rotates together with an output shaft of the motor. A connection gear is engaged and rotates together with the motor gear. A recirculation gear is engaged and rotates together with the connection gear. A recirculation valve opens and closes the exhaust gas inflow passage since the recirculation valve rotates together with the recirculation gear. An intake air gear is engaged and rotates together with the connection gear. An intake air throttle valve opens and closes the intake air inflow passage.

Abstract: In a case where EGR is started in a supercharging region, an opening degree of a waste gate valve (17) is changed at a timing T1 at which an EGR ratio in a first predetermined position changes by valve open of an EGR control valve (21). In a case where EGR is started in a non-supercharging region, a throttle valve (5) is changed at a timing T2 at which an EGR ratio in a second predetermined position changes by valve open of the EGR control valve (21). With these controls, it is possible to suppress an occurrence of torque step upon start of the EGR without distinction between the supercharging region and the non-supercharging region.

Abstract: An engine is provided that includes an exhaust gas recirculation (EGR) conduit in fluidic communication with a first exhaust valve in a cylinder and an intake system, an exhaust conduit in fluidic communication with a second exhaust valve in the cylinder and an emission control device. During operation with the first valve active and the second valve deactivated, a fixed EGR level can be provided. However, during operation with the first valve deactivated and the second valve active, increased engine output can be achieved with reduced EGR without requiring additional exhaust throttling or switching valves.

Abstract: A system comprising an engine including a chamber; an air intake coupled to the engine; a pressure sensor disposed in fluid communication with the air intake and disposed between the air intake and the chamber; and a processor configured to determine a breach in a ventilation system of the chamber in response to the pressure sensor.

Abstract: In an internal combustion engine, a valve actuating mechanism actuates an intake valve member to open an intake port, and actuates an exhaust valve member to return a first part of exhaust gas with a high-temperature from a gas exhaust passage into a combustion chamber via an exhaust port. A cooling and recirculation system recirculates a second part of the exhaust gas from the gas exhaust passage into the gas intake passage via a recirculation passage while cooling the second part of the exhaust gas. This results in a stratified temperature distribution of a high-temperature mixture of first fresh air and the first part of the exhaust gas with the high temperature and a low-temperature mixture of second fresh air and the second part of the exhaust gas with a low temperature in the combustion chamber.

Abstract: An internal combustion engine system basically has an internal combustion engine, a reforming fuel injection device and a reformer. The internal combustion engine has an exhaust circulation path that is connected to an exhaust path and an intake path communicating with a combustion chamber. The reforming fuel injection device injects a reforming fuel into an exhaust gas flowing through the exhaust circulation path. The reformer has a reforming catalyst for generating a hydrogen-containing gas using the reforming fuel. The internal combustion engine system has a reforming catalyst regeneration device for causing an oxygen-containing gas to flow through the exhaust circulation path and thereby regenerate the reforming catalyst at a predetermined timing for regenerating the reforming catalyst.

Abstract: A valve (10) may be used with an internal combustion engine exhaust breathing system (12) and may include a body (60), a partition (62), and a plate (66). The body (60) may define a first port (70) that has a first interior surface (76), and may also define a second port (82) that has a second interior surface (84). The partition (62) may be located within the body (60), may at least partially separate the first port (70) and the second port (82) from each other, and may define an opening (104). The plate (66) may be dimensioned to seat and seal against the opening (104) and against the first and second interior surfaces (76, 84). The plate (66) may rotate, depending on predetermined factors, between a first position and a second position.

Abstract: An integrated exhaust gas recirculation intake module comprises: an intake system including a fresh air channel; and a coupling device, wherein the coupling device is configured to receive an exhaust gas recirculation valve, wherein the coupling device is configured to connect an exhaust gas channel with a fresh gas channel, and wherein the exhaust gas channel is connected with the coupling device such that a heat transfer is hindered.

Abstract: A mixer for pulsed exhaust gas recirculation (EGR) includes a fresh intake air conduit having an inlet opening configured to be placed into fluid communication with a fresh intake air source, an EGR pocket having an upstream opening in fluid communication with an upstream air source and a downstream opening in fluid communication with the fresh intake air conduit, and an EGR conduit configured to introduce pulsed EGR into the EGR pocket.

Abstract: When a failure occurs in synchronizing mechanism, an intake air throttle valve is rotated in a direction that is opposite from a normal operational time valve closing direction, so that an arm of a driven plate contacts a throttle valve side stopper to stop rotation of the intake air throttle valve. Thereafter, when a low pressure EGR valve is rotated from a full close position to a full open position, an EGR valve side stopper contacts the arm of the driven plate to stop the low pressure EGR valve. A rotational angle of the EGR valve is sensed with a sensor and is outputted to an ECU. The ECU determines that a failure mode is set when a valve angle sensed with the sensor coincides with a rotation stop position of the EGR valve.

Abstract: The present invention provides an internal combustion engine with a self-cleaning exhaust gas recirculation (EGR) system. The engine can have an intake, a combustion chamber, and an exhaust with the EGR system accepting exhaust gas from the exhaust and supplying exhaust gas to the intake. The internal combustion engine also has a hydrogen source in fluid communication with a hot side of the EGR system, the hydrogen source affording hydrogen to flow into and through the EGR system and remove at least a portion of carbon-containing deposits therewithin.

Abstract: In one aspect a mixing tube is provided for the introduction of a flow of exhaust gas into a flow of intake air of an internal combustion engine. The mixing tube comprises an opening, tube section, and a plurality of tube ports. The opening is configured to receive the flow of exhaust gas. The tube section is fluidly connected to the opening and extends into the flow of intake air. The tube ports on the tube section are located in low static pressure regions that are determined as intake air passes around the tube section.

Abstract: A method to avoid over-dilution of an intake-air charge of an engine includes, during a first condition, applying at least some feedback control to the opening and closure of a valve that adjustably admits exhaust to the intake-air charge. During a second condition predictive of compressor surge, no feedback control is applied to the opening or the closure of the valve. Rather, feedforward control is applied to the closure of the valve so that stability in the engine is maintained even during surge conditions.

Abstract: This invention relates to an automatically regulated gaseous mixer for small universal gas engine comprising a mixer body, a choker, an air inlet port, a main gas passage, a main metering jet, a mixture outlet port, a throttle valve, a gas connecting passage and an auxiliary gas passage, which is characterized in that an auxiliary gas passage is set parallel to the main gas passage and connected through a vertical gas passage. Its top end is linked to the main gas passage and the lower end is connected with the auxiliary gas passage, one end of the auxiliary passage is connected with the mixture outlet port. The shaft of throttle valve is in line with auxiliary gas passage and is extended into the auxiliary gas passage to form an automatically regulated valve. The advantages of this invention are simple and compact; practical and reliable.

Abstract: A system and method for improving exhaust gas recirculation performance is provided to induce improved exhaust gas recirculation flow during engine operating transients, including transients in which exhaust gas flow conditions are unfavorable. The apparatus includes an exhaust line including a mechatronic exhaust brake valve, an intake system including a PBS compressed air injection system, an exhaust gas recirculation passage between the exhaust and intake lines, and a controller which coordinates operation of the PBS and MEB. The controller is programmed to command the MEB to close for a period before the compressed air injection is initiated so as to build exhaust line backpressure pressure and maintain a desired pressure differential across the EGR passage so that recirculated exhaust gas flow continues to enter the intake during to PBS injection event to suppress formation of undesired excess NOx, particulate and other emissions.

Abstract: An engine includes an intake manifold mixing an intake air flow and an exhaust gas recirculation flow to provide an intake charge flow. A method to estimate an intake charge temperature of the intake charge includes monitoring system conditions for the engine, determining an effect of the mixing upon a specific heat coefficient of the intake charge flow based upon the monitored system conditions, estimating the intake charge temperature based upon the effect of the mixing upon the specific heat coefficient of the intake charge flow and the monitored system conditions, and controlling the engine based upon the estimated intake charge temperature.

Abstract: Various systems and methods are described for operating an engine system having a sensor coupled to an exhaust gas recirculation system in a motor vehicle. One example method comprises during a first operating condition, directing at least some exhaust gas from an exhaust of the engine through the exhaust gas recirculation system and past the sensor to an intake of the engine and, during a second operating condition, directing at least some fresh air through the exhaust gas recirculation system and past the sensor.

Abstract: A device for reducing corrosive constituents in an exhaust gas condensate of an internal combustion engine is provided, in which the exhaust gas of the internal combustion engine is recirculated to the internal combustion engine via an exhaust gas recirculation system having an exhaust gas cooler and at least one exhaust gas recirculation line. To protect the exhaust gas recirculation system along with intake air components and the internal combustion engine from the corrosive effects of the exhaust gas condensate, the exhaust gas recirculation system has at least one neutralization unit for neutralizing the corrosive constituents of the exhaust gas condensate, which is connected to at least one component arranged downstream, through which the exhaust gas, which has been freed of nearly all corrosive constituents, flows.

Abstract: A spark ignition type internal combustion engine of the present invention comprises a variable closing timing mechanism able to change a closing timing of an intake valve after intake bottom dead center and an EGR mechanism making a part of the exhaust gas flow again into a combustion chamber as EGR gas. The EGR mechanism is controlled so that the amount of EGR gas is reduced when the closing timing of the intake valve is at a retarded side, compared with when it is at an advanced side. Due to this, occurrence of variation among cylinders in the air-fuel ratio and intake resistance along with blowback of intake gas can be suppressed.

Abstract: In an exemplary embodiment, an internal combustion engine includes an oxidation catalyst configured to receive an exhaust gas flow from the internal combustion engine, a urea injector positioned downstream of the oxidation catalyst to inject a urea flow into the exhaust gas flow and a mixer positioned downstream of the urea injector to mix the exhaust gas flow and the urea flow to form a mixed exhaust gas and urea flow. The engine also includes a particulate filter and catalytic reduction assembly positioned downstream of the mixer to receive the mixed exhaust and urea flow from the mixer to form a treated exhaust gas flow and an exhaust gas recirculation system coupled to the particulate filter to receive a portion of the treated exhaust gas flow and recirculate the portion of the exhaust gas flow to be mixed with a fresh air flow for the internal combustion engine.

Abstract: The present invention relates to a two-stage supercharging system for an internal-combustion engine (10) comprising at least one cylinder (12) with an intake distributor (16) and an exhaust manifold (18), as well as a recirculation line (78) for recycling the exhaust gas to the intake of said engine, said system comprising a high-pressure supercharging stage (22) with a turbocharger including an expansion turbine (26) connected to a compressor (30) and a low-pressure supercharging stage (24) with a turbocharger including an expansion turbine (28) connected to a compressor (32), and exhaust gas purification means arranged between exhaust outlet (40) and turbine (26) of the high-pressure turbocharger. According to the invention, the system comprises an exhaust gas bypass branch (70) going from outlet (40) of the engine exhaust and ending at turbine (28) of low-pressure turbocharger (24).

Abstract: The present invention relates to an internal combustion engine and, more particularly, an internal combustion engine having a new and novel system for improving the efficiency of the engine. In a preferred embodiment the system comprises an expander effective for receiving condensed engine exhaust and placing said exhaust in contact with copper or a copper alloy and for transforming the exhaust into vapor for transfer into the combustion chamber of the engine. In a preferred embodiment the system further comprises a condenser means for cooling the exhaust exiting the engine sufficiently to condense any water vapor and/or fuel vapor to form a liquid mixture or water and fuel, collecting and storing the liquid mixture, and directing the stored liquid mixture to the expander.

Abstract: A method for controlling the wastegate in a turbocharged internal combustion engine including the steps of: determining, during a design phase, a control law which provides an objective opening of a controlling actuator of the wastegate according to the supercharging pressure; determining an objective supercharging pressure; measuring an actual supercharging pressure; determining a first open loop contribution of an objective position of a controlling actuator of the wastegate by means of the control law and according to the objective supercharging pressure; determining a second closed loop contribution of the objective position of the controlling actuator of the wastegate; and calculating the objective position of the controlling actuator of the wastegate by adding the two contributions.

Abstract: An exhaust gas recirculation system for an internal combustion engine comprises an exhaust driven turbocharger having a low pressure turbine outlet in fluid communication with an exhaust gas conduit. The turbocharger also includes a low pressure compressor intake and a high pressure compressor outlet in communication with an intake air conduit. An exhaust gas recirculation conduit fluidly communicates with the exhaust gas conduit to divert a portion of exhaust gas to a low pressure exhaust gas recirculation branch extending between the exhaust gas recirculation conduit and an engine intake system for delivery of exhaust gas thereto. A high pressure exhaust gas recirculation branch extends between the exhaust gas recirculation conduit and the compressor intake and delivers exhaust gas to the compressor for mixing with a compressed intake charge for delivery to the intake system.

Abstract: Three-way valve with two flaps comprising common control means (9) for the two flaps and actuation means (12, 13, 50) arranged each to drive, pivotwise, one of the two flaps, from one to the other of its open and closed position of one of the pathways, with a temporal phase-shift, such that, in a first stage the common control means pivot the second flap, the first flap remaining in a waiting position under the action of return means, and in a second stage, said control means, while continuing to pivot the second flap, begin to pivot the first flap, characterized in that said second actuation means (12, 50) comprises a return driving means (71) making it possible to pivot the second flap (5) to its first position under the action of the common control means (9) in the case of a failure of said return means.

Abstract: Three-way valve with two flaps comprising single control means (9) for the two flaps and actuation means (12, 13, 50) arranged each to drive, pivotwise, one of the two flaps, from one to the other of its open and closed position of one of the pathways, with a temporal phase-shift, characterized in that it comprises maximum displacement end-stops for each of said actuation means, the end-stop (31) of the second actuation means (12, 50) corresponding to a fully closed position of its flap and the end-stop of the first actuation means (13) being positioned beyond the position of said first actuation means when the second actuation means (12, 50) is on its end-stop (31), the kinematic chains linking the first and second actuation means to the single control means operating nominally.

Abstract: A motor vehicle internal combustion engine EGR loop, in which: with the fresh air flow rate in the air inlet path (2) of the EGR valve (1) set at a maximum, the path (3) for the EGR gases in the valve is progressively opened, and before the EGR gas flow rate in the valve increases any further, the fresh air inlet path (2) is progressively closed in order to continue to cause the EGR gas flow rate to increase on an increasing monotonous curve.

Abstract: A method for providing intake air to an engine in a vehicle includes forming a mixture of fresh air and treated exhaust, and compressing the mixture upstream of a first throttle valve coupled to an intake manifold of the engine. The method further includes, during a higher engine-load condition, admitting the mixture to the intake manifold via the first throttle valve, and, during a lower engine-load condition, admitting fresh air to the intake manifold via a second throttle valve.

Abstract: In a connection box for direct connection to a charging fluid duct of a charging fluid supply designed for intermixing a charge air and an exhaust gas to form a charging fluid, comprising a housing with a charge air connecting space including at least a connection for a charge air guide arrangement, and at least one mixing channel in communication with the charge air connecting space via a connection for supplying charge air to the mixing channel and the mixing channel including a supply side exhaust gas connection for an exhaust gas recirculation and a charging fluid-side mixing channel connection for the charging fluid duct, the connection is arranged at a first front side of the housing, and the mixing channel extends along a longitudinal side of the housing from the first front side to a second front side of the housing opposite the first front side.

Abstract: High pressure regions (31H to 35H) and low pressure regions (31L to 34L) are created based on the exhaust gas flow at curves in an EGR pipe (30), thereby enabling the exhaust gas pressure at inlets (21b to 26b) of gas introduction passages (21a to 26a) to be adjusted. Accordingly, regardless of the number of cylinders or whether the lengths of the flow paths of the EGR pipe (30) are the same, the exhaust pressure at the inlets (21b to 26b) of the gas introduction passages (21a to 26a) can be appropriately adjusted so any difference in pressure of exhaust gas introduced into branch pipes (21 to 26) can be reduced. In this way, the EGR rates of the cylinders can be made closer or the same such that stable combustion can be achieved, thus enabling stable engine operation to be maintained. The EGR pipe (30) is arranged weaving closely between the branch pipes (21 to 26) so space efficiency can be improved and a sufficient amount of exhaust gas can be introduced evenly into the cylinders.

Abstract: A method for controlling an engine with exhaust gas recirculation is provided. The method comprises directing EGR from exhaust downstream of an exhaust-aftertreatment catalyst to mix with fresh air upstream of an intake compressor and upstream of a throttle valve, and, in response to increased throttling by the throttle valve, discharging the mixed EGR and fresh air from downstream of the intake compressor to the exhaust downstream of the exhaust-aftertreatment catalyst.

Abstract: A method is disclosed for operating an engine with a first cylinder providing a net flow of gases from the intake to the exhaust while combusting; and a second cylinder providing a net flow of gases from the exhaust to the intake. Both the first and second cylinders may carry out combustion during such operation.

Abstract: An internal-combustion engine receives no air from outside atmosphere and it discharges no gas into outside atmosphere. The engine receives fuel, oxygen and recycled combustion gas and its exhaust consists mostly of carbon dioxide and water vapor. Most of the gas exhausted from the engine is recycled back into the engine intake, and the remaining gas is cooled and condensed into liquid carbon dioxide and water. Discharge of greenhouse gas into environment and emission of other harmful air pollutants are eliminated.

Abstract: An EGR mixer has a mixing shell which defines a mixing cavity only on the down side, and does not define the mixing cavity on the up side. The EGR mixer has a primary internal opening for fresh air, which is formed so that an opening plane is inclined to a side so that the opening plane faces a secondary internal opening for exhaust gas. The primary internal opening and the secondary internal opening are arranged to allow exhaust gas to enter into the primary internal opening. The exhaust gas restricts a fresh air flow so that the fresh air flow creates increased vacuum. It is possible to suppress pressure loss and to increase an amount of exhaust gas.

Abstract: Separation of an air compression supply port from exhaust gas recirculation (EGR) in internal combustion engines. In one aspect, an air intake connector includes an entry port for an EGR gas, and an air intake elbow is connected to the air intake connector, the elbow receiving air. The elbow includes a first passage for routing a first portion of the air to the air intake connector to be mixed with the EGR gas, and a second passage for routing a second portion of the air to the air intake connector and out an exit port to an air compressor. The second passage is attached to the elbow and extends through a bend in the elbow.

Abstract: A working gas circulation engine includes a combustion chamber that can expand a working gas, which has a specific heat ratio higher than that of the air, with the combustion between an oxidizing agent and a fuel; a circulation path that can allow the working gas to circulate from a suction side to an exhaust side of the combustion chamber and can supply the same again to the combustion chamber; a feed means that can feed the gas in a pressure-reduction target section, which is the section whose pressure is to be reduced, to the outside, and a control means that operates the feed means for feeding the gas in the pressure-reduction target section, when the pressure in the pressure-reduction target section is higher than a predetermined pressure that is set in advance.

Abstract: A method is disclosed for operating an engine with a first cylinder providing a net flow of gases from the intake to the exhaust while combusting; and a second cylinder providing a net flow of gases from the exhaust to the intake. Both the first and second cylinders may carry out combustion during such operation.

Abstract: A method for providing intake air to an engine in a vehicle includes forming a mixture of fresh air and treated exhaust, and compressing the mixture upstream of a first throttle valve coupled to an intake manifold of the engine. The method further includes, during a higher engine-load condition, admitting the mixture to the intake manifold via the first throttle valve, and, during a lower engine-load condition, admitting fresh air to the intake manifold via a second throttle valve.

Abstract: An exhaust gas recirculation apparatus includes a housing connected with an EGR cooler via a mount face. The housing has a valve chamber accommodating a selector valve. The housing has a partition extending from the mount face close to the valve chamber to divide first and second exhaust ports opened in the mount face. A first passage leads exhaust gas into the EGR cooler through the valve chamber. A second passage recirculates exhaust gas to the intake passage through the EGR cooler and the valve chamber. A bypass passage leads exhaust gas from the engine through the valve chamber to bypass the EGR cooler. A rotation axis of the selector valve is perpendicular to an axis of the mount face, and offset away from the partition.

Abstract: Systems and methods for an engine are described. In one example, a system may include a variable venturi coupled in an intake of the engine; an exhaust gas recirculation system having an exhaust gas recirculation flow path, the exhaust gas recirculation flow path coupled to the variable venturi; and a vacuum-utilizing device or system coupled to the variable venturi. In another example, a method may include coordinating adjustment of an exhaust gas recirculation valve coupled to the exhaust gas recirculation system, a fuel vapor purging valve coupled to the fuel vapor purging system, and the variable venturi in response to operating conditions.

Abstract: Various systems and methods are described for operating an engine system having a sensor coupled to an exhaust gas recirculation system in a motor vehicle. One example method comprises during a first operating condition, directing at least some exhaust gas from an exhaust of the engine through the exhaust gas recirculation system and past the sensor to an intake of the engine and, during a second operating condition, directing at least some fresh air through the exhaust gas recirculation system and past the sensor.

Abstract: Systems and methods for an engine are described. In one example, a system may include a variable venturi coupled in an intake of the engine; an exhaust gas recirculation system having an exhaust gas recirculation flow path, the exhaust gas recirculation flow path coupled to the variable venturi; and a vacuum-utilizing device or system coupled to the variable venturi. In another example, a method may include coordinating adjustment of an exhaust gas recirculation valve coupled to the exhaust gas recirculation system, a fuel vapor purging valve coupled to the fuel vapor purging system, and the variable venturi in response to operating conditions.

Abstract: A method for operating a combustion unit (1), a fuel (6) being burned with an oxygen-containing carrier gas (7) in at least one combustion space (2) with the release of an exhaust gas flow (8), ambient air (10) being separated into a product gas (12) which is enriched with oxygen and into exhaust air (13) enriched with nitrogen, a gas flow (9) being separated from the exhaust gas flow (8) and returned to the combustion space (2), the returned gas flow (9) being mixed with a gas flow (12a) of the product gas (12) to form a carrier gas (7). The carrier gas (7) and fuel (6) are supplied separately to the combustion space (2). The argon concentration in the returned gas flow (9) and/or in the carrier gas (7) is measured.

Abstract: The exhaust within an exhaust gas recirculation (EGR) system should be purged to allow for access to the components of the EGR system. A system and method for purging the EGR system is provided. The system and method may incorporate a purge gas supply that may include: at least one pressurized cylinder, a storage tank, a compressor, or a benign fluid source. The system and method may drive the exhaust out of the EGR system.

Abstract: The exhaust within an exhaust gas recirculation (EGR) system should be purged to allow for access to the components of the EGR system. A system and method for purging the EGR system is provided. The system and method may incorporate an: EGR purge fan, an EGR purge blower, or a turbomachine. The system and method may draw the exhaust out of the EGR system. The system and method may drive the exhaust out of the EGR system.