Abstract: The present disclosure provides a method and an Internet of Things system for regulating a gas in-home pressure based on smart gas. The method includes: determining a gas in-home pressure regulation scheme, and the gas in-home pressure regulation scheme including a pressure regulation parameter of a gas device; generating, based on the gas in-home pressure regulation scheme, a pressure regulation instruction; regulating, based on the pressure regulation instruction, a gas in-home pressure of at least one floor; and transmitting the gas in-home pressure regulation scheme to a smart gas user terminal.

Abstract: An aftertreatment system includes a first exhaust gas path, a second exhaust gas path, and a selector valve configured to divert exhaust gas between the first exhaust gas path and the second exhaust gas path based on a temperature of the exhaust gas. The aftertreatment system also includes a controller programmed to control the selector valve such that the selector valve diverts at least a portion of the exhaust gas to the first exhaust gas path when the temperature of the exhaust gas is equal to or less than a predetermined temperature threshold and the selector valve diverts the exhaust gas to the second exhaust gas path when the temperature of the exhaust gas is greater than the predetermined temperature threshold. The first exhaust gas path includes a heater configured to heat the exhaust gas received in the first exhaust gas path.

Abstract: The power system includes a compression ignition engine configured to combust intake gas; an intake arrangement configured to intake charge air; an exhaust arrangement to receive a first portion of the exhaust; an EGR arrangement to receive a second portion of the exhaust as EGR gas; a first mixer to selectively mix a first portion of the EGR gas and the charge air as mixed gas; an intake heat exchanger positioned upstream or downstream of the first mixer and respectively configured to receive one of the intake charge air or the mixed gas such that heat is exchanged with engine coolant; a second mixer positioned downstream of the first mixer and the intake heat exchanger and configured to selectively mix a second portion of the EGR gas and the mixed gas to form the intake gas; and an intake manifold configured to direct the intake gas into the engine.

Abstract: System (2) for CO2 capture from a combustion engine (1) comprising an exhaust gas flow circuit (6) having an inlet end fluidly connected to an exhaust of the combustion engine, a heat exchanger circuit (12), a primary exhaust gas heat exchanger (H1) for transferring heat from exhaust gas to fluid in the heat exchanger circuit, at least one compressor (10) for compressing fluid in a section of the heat exchanger circuit, the compressor driven by thermal expansion of heat exchanger circuit fluid from the primary exhaust gas heat exchanger (H1), and a CO2 temperature swing adsorption (TSA) reactor (4) fluidly connected to an outlet end of the exhaust gas flow circuit. The TSA reactor includes at least an adsorption reactor unit (D4) and a desorption reactor unit (D2), the heat exchanger circuit comprising a heating section (12b) for heating the desorption unit (D2) and a cooling section (12a) for cooling the adsorption unit (D4).

Abstract: Disclosed are systems, methods, and devices for generating radicals in an air stream at the intake of an internal combustion engine, as well as increasing the thrust of such air streams into the engine. A plasma generator including plasma actuators, dielectric barrier discharge electrodes, or both is positioned in the intake stream. Plasma actuators are disposed on the interior surface of the plasma generator, exposed to the intake stream. Dielectric barrier discharge electrodes protrude into the intake air stream. Plasma, preferably DBD plasma, glow plasma, or filamentary plasma, is generated in the air intake stream, creating radicals in the stream, mixing the radicals in the stream, and reducing drag while increasing thrust of air in the intake stream. A concentric cylinder can be further disposed in the plasma generator, with further plasma actuators, dielectric barrier discharge electrodes, or both, on the interior and exterior surfaces of the cylinder.

Abstract: Disclosed are a method and system for controlling urea injection for selective catalyst reduction (SCR), capable of improving NOx purification efficiency by predicting an operating situation in which an amount of NOx production is rapidly increased using engine behavior and pre-occluding ammonia in advance. An opening state of an EGR valve may be detected at the time of rapid acceleration of a vehicle; a pressure condition in an intake manifold or an EGR valve pressure condition may be diagnosed according to the opening state of the EGR valve; and urea may be injected when the pressure condition meets an NOx excess production condition of rapidly increasing the amount of NOx production.

Abstract: An internal combustion engine exhaust modification system for transforming exhaust emissions from an internal combustion engine into modified exhaust emissions. The exhaust modification system include a housing extending between inlet and outlet ends thereof. The housing has a first cross-sectional area at a first location that is downstream from the inlet end and a second cross-sectional area at a second location that is downstream from the first location. The second cross-sectional area is larger than the first cross-sectional area. The system also includes an impeller rotatably mounted in the housing, and a filter subassembly. The filter subassembly removes part of particulate matter and liquid droplets in the exhaust emissions to transform the exhaust emissions into modified exhaust emissions.

Abstract: An exhaust gas recirculation system for an engine includes a first conduit, a second conduit, and a mixer. The first conduit is configured to direct a first portion of exhaust gas away from a first exhaust manifold. The second conduit is configured to direct a second portion of exhaust gas away from a second exhaust manifold. The mixer is configured to direct the first and second portions of the exhaust gas from the first and second conduits, respectively, into an engine air intake system. The mixer is arranged to segregate the first and second portions of the exhaust gas while the first and second portions of the exhaust gas are within the mixer. The mixer forms a ring about a perforated tube. The mixer is configured to direct the first and second portions of the exhaust gas into the air intake system via the perforated tube.

Abstract: An exhaust gas recirculation (EGR) cooler assembly can be used to perform heat exchange between cooling water and exhaust gas. The EGR cooler assembly includes an EGR cooler in which cooling water flows, and a diesel particulate filter (DPF) including a housing accommodating therein the EGR cooler and a filter unit for post-treatment of the exhaust gas. An inside of the housing is sectioned by a partition into a first space in which the EGR cooler is inserted and a second space in contact with the filter unit, and the partition has a flow hole formed thereon in order to allow the exhaust gas to flow to the EGR cooler.

Abstract: A vehicle is provided and includes a GPF (gasoline particulate filter) that is configured to store a soot generated in an engine and burn the soot and a sensor that is configured to detect a first soot mass included in the GPF. A controller is configured to calculate a second soot mass estimated at the ignition off based on the detected first soot mass and determine an inlet temperature of the GPF based on the second soot mass and a predetermined reference value. The engine is then operated based on the determined inlet temperature of the GPF.

Abstract: A control apparatus of an internal combustion engine controls a heat exchange cooling water flow rate which is a flow rate of cooling water supplied to an exhaust heat recovery cooler apparatus, to a larger flow rate when the control apparatus executes an EGR control, and the exhaust heat recovery cooler apparatus performs an exhaust heat recovery function, than when the control apparatus executes the EGR control, and the exhaust heat recovery cooler apparatus does not perform the exhaust heat recovery function.

Abstract: An internal combustion engine includes low and high pressure turbochargers connected in series. An engine cylinder has an intake valve that fluidly connects a main chamber of the engine cylinder with an outlet of the high pressure compressor through an intake passage. An exhaust gas recirculation passage is fluidly interconnected between exhaust and intake conduits. A pre-chamber encloses a spark plug and is fluidly open with the main chamber of the engine cylinder. A first fluid path extends from the intake passage directly to the pre-chamber, and a second fluid path extends from the intermediate passage directly to the pre-chamber.

Abstract: An engine device including an exhaust gas purification device above a cylinder head through a support pedestal. The support pedestal has a flat portion on which the exhaust gas purification device is mounted, and a plurality of legs which protrude downward from the flat portion and are fixed to the cylinder head. The flat portion and the leg portions are formed integrally. Portions between the legs are each formed in an arch-shape.

Abstract: An apparatus for purifying exhaust gas includes: an engine; an exhaust gas air-fuel ratio adjustor for adjusting an air-fuel ratio of the exhaust gas; a lean NOx trap (LNT) mounted on the exhaust pipe and generating ammonia or reducing nitrogen oxides or desorbed nitrogen oxides contained in the exhaust gas using a reducing agent including carbon monoxide, hydrocarbon, or hydrogen contained in the exhaust gas; a three way catalyst (TWC) mounted on the exhaust pipe at a rear end of the LNT, and converting noxious gas in the exhaust gas into harmless components through a redox reaction; and a controller controlling the air-fuel ratio of the exhaust gas to a stoichiometric air-fuel ratio when the nitrogen oxide storage or purification performance of the LNT is in the operating period of the engine less than a predetermined level.

Abstract: When there is a restart request to an engine, an electronic control unit controls a wastegate valve to a fully open position on condition that a speed of a vehicle is less than a threshold. When the vehicle speed is not less than the threshold, the electronic control unit restarts the engine and controls the wastegate valve in the closing direction until a desired torque is generated.

Abstract: The present disclosure relates to a valve opening control apparatus and method of a gasoline EGR system. The valve opening control apparatus includes a gasoline engine generating driving power through combustion, an intake line through which an intake gas flows into a combustion chamber of the gasoline engine, an exhaust line through which an exhaust gas is discharged from the combustion chamber, a recirculation line branched off from the exhaust line and connected to the intake line, an EGR cooler, positioned in the recirculation line, cooling the exhaust gas flowing in the intake line, an EGR valve configured to control an amount of the exhaust gas flowing in the intake line, an emergency (EM) filter positioned in one end of the EGR valve, and a flow rate regulator configured to control an opening amount of the EGR valve according to a clogging state of the EM filter.

Abstract: A valve control device controls an opening degree of a valve provided in an intake passage, an exhaust passage, or a passage connected one of these and includes an observed value acquisition unit, an inlet temperature acquisition unit, a target calculation unit, an equilibrium opening degree calculation unit, an observer, a correction opening degree calculation unit, an instruction opening degree calculation unit, and an output unit. The target calculation unit calculates an equilibrium state value and a target property value. The correction opening degree calculation unit calculates a correction opening degree by multiplying a gain matrix by a deviation vector including, a deviation between the equilibrium state value and the estimated state value and an integrated value of a deviation between the target property value and the estimated property value.

Abstract: An inlet system for an internal combustion engine is provided and includes a compressor including a rotor, and an air guide arranged to guide an air flow from an air inlet to at least one cylinder of the engine via the compressor. The inlet system also includes at least two fluid sources, and at least two fluid guiding elements each arranged to guide a fluid from a respective of the fluid sources to the air guide, between the air inlet and an outlet of the compressor, that the fluid guiding elements present a first conduit for guiding a fluid from a first of the fluid sources, and a second conduit for guiding a fluid from a second of the fluid sources, and that a restriction of a flow of the fluid from the first fluid source is provided by a downstream end of the first conduit and the rotor, whereby a downstream end of the second conduit is arranged so that a pressure drop provided by the restriction drives fluid through the second conduit towards the downstream end of the second conduit.

Abstract: Systems and apparatuses include a controller structured to: receive information indicative of an operating condition of a vehicle subsystem, receive information indicative of an external static condition, and receive information indicative of an external dynamic condition. The system is further configured to predict a fuel cut event based on at least one of the operating condition of the vehicle subsystem, the external static condition, and the external dynamic condition. Responsive to predicting a fuel cut event, the controller is structured to modulate at least one of a torque or a speed of the engine based on the operating condition of the vehicle subsystem and at least one of the information indicative of the external static condition and the external dynamic condition.

Abstract: An intake manifold includes: a lower body having an air inlet through which an air flows; an EGR gas inlet through which an EGR gas flows; and a plurality of lower runners disposed at the plurality of combustion chambers, respectively, to supply the air inflowing through the air inlet and the EGR gas inflowing through the EGR gas inlet to each of the plurality of combustion chambers; and an upper body combined with the lower body and having one side connected to the plurality of lower runners and another side having an upper runner connected to the intake port. The lower body further includes a condensed water storage apparatus temporary storing a condensed water generated by a mixture of the air and the EGR gas.

Abstract: A method of removing impurities from EGR by air blowing may include performing an air-blowing mode in which, when a current intake system pressure detected by a controller exceeds a target intake system pressure in an intake system, in which a mixture is supplied to an engine, a portion of the mixture, serving as compressed air, flows into an EGR path, through which a portion of exhaust, serving as EGR gas and flowing in the intake system and an exhaust system connected to the intake system, is supplied to the engine.

Abstract: Systems and methods are described for heating engine coolant by transferring heat from an exhaust flow to the engine coolant via a heat exchanger positioned in an exhaust gas heat recovery line coupled to the EGR cooler responsive to an EGR valve position. In one particular example, a branching pathway of the EGR cooler is positioned downstream of the EGR cooler and allows exhaust gas to be routed to the EGR cooler and/or exhaust gas heat exchanger based on the EGR valve position, which allows for control of the amount of heat transferred to the engine coolant as well as exhaust gas recirculation into the engine. With this arrangement, a cabin temperature of a hybrid vehicle may be increased as quickly as possible under cold start conditions to allow the engine to be quickly turned off after heating the vehicle cabin.

Abstract: Methods and systems are provided for exhaust heat recovery and EGR cooling via a single heat exchanger. In one example, a method may include selecting a specific mode of operation of an engine exhaust system with the heat exchanger based on engine operating conditions and an estimated fuel efficacy factor. The fuel efficiency factor may take into account fuel efficacy benefits from EGR and exhaust heat recovery.

Abstract: Methods and systems are provided for a particulate matter sensor positioned downstream of a diesel particulate filter in an exhaust system. In one example, a particulate matter sensor assembly may include an outer stepped tube, an inner stepped tube positioned within the outer tube, and a plate having sensor element positioned inside the inner tube, the inner and the outer tube generating a step in the assembly. The step may block larger contaminants and water droplets, and thereby stopping them from impinging on the sensor element positioned within the assembly.

Abstract: Methods and systems are provided for a single heat exchanger coupled to a main exhaust passage upstream of one or more exhaust catalysts or in between two exhaust catalysts for exhaust heat recovery and exhaust gas recirculation (EGR) cooling. In one example, in the pre-catalyst configuration of the heat exchanger, during exhaust heat recovery, a portion of exhaust may be routed via the heat exchanger while the remaining portion of exhaust may be routed directly to the exhaust catalysts, and fueling may be adjusted on a per-cylinder basis to maintain a target exhaust air-fuel-ratio at the exhaust catalysts.

Abstract: The object of the present invention is to provide a compact engine. An engine has a two-stage turbocharger provided with a high-pressure turbocharger and a low-pressure turbocharger. The high-pressure turbocharger and the low-pressure turbocharger are separately disposed on the gear case side and the flywheel side in along direction of a main body respectively. An intake pipe and an exhaust pipe connecting the high-pressure turbocharger with the low-pressure turbocharger are separately and respectively disposed on right side and left side in a transverse direction of the main body.

Abstract: Methods and systems for increasing fuel economy of a vehicle including a SCR catalyst are presented. In one example, an amount of EGR provided to an engine is decreased in response to performance of the SCR being within a predetermined range of performance. The methods and systems may increase vehicle fuel economy while vehicle tailpipe emissions are achieved.

Abstract: An engine having an after-treatment system for reducing emissions from an exhaust stream includes an intake manifold and a plurality of cylinders coupled to the intake manifold. The plurality of cylinders includes a first set of cylinders and a second set of cylinders. Further, the engine includes a first exhaust manifold coupled to the first set of cylinders and a second exhaust manifold coupled to the second set of cylinders. The engine further includes an after-treatment system coupled to the first exhaust manifold. The first exhaust manifold further includes an end portion disposed downstream relative to the after-treatment system. The end portion of the first exhaust manifold is coupled to a first portion of the second exhaust manifold via a pipe.

Abstract: Methods and systems are provided for regenerating a NOx storage catalytic converter of a multi-cylinder internal combustion engine comprising selectively switchable cylinders. During permissible engine operating conditions, the switchable cylinders may be deactivated in order to regenerate the NOx storage catalytic converter using the rich exhaust from the active cylinders blended with un-combusted gas from the deactivated cylinders.

Abstract: When a catalyst temperature is lower than a predetermined temperature on a second or subsequent start of an engine since system activation of a vehicle, a catalyst warm-up request is output for the purpose of warming up a catalyst in a catalytic converter. An output limit Wout of a battery is not increased in response to a second or subsequent output of the catalyst warm-up request, while being increased in response to a first output of the catalyst warm-up request. Accordingly, the catalyst warm-up in response to the second or subsequent output of the catalyst warm-up request since the system activation suppresses excessive output of electric power from the battery and thereby suppresses deterioration of the battery. Catalyst warm-up is performed in response to the second or subsequent output of the catalyst warm-up request. This suppresses deterioration of emission.

Abstract: A work vehicle having a plurality of working modes allowing working in accordance with a load state includes an engine, an exhaust gas purification apparatus, a reducing agent tank, a state determination portion, and an engine control unit. The exhaust gas purification apparatus purifies a nitrogen oxide in an exhaust gas. The reducing agent tank stores a reducing agent. The state determination portion determines a state of the reducing agent. The engine control unit controls output of the engine with the use of a restricted-operation engine output torque curve in which horsepower output from the engine is lower than horsepower output from the engine at the time when each of the plurality of working modes is selected, when a state of the reducing agent is equal to or lower than a reference value.

Abstract: A water recovery device includes: an exhaust gas pipe that is connected to a combustion device; a water generation unit that generates water by cooling exhaust gas in the exhaust gas pipe to condense water vapor in the exhaust gas; and a water container that stores water generated by the water generation unit. The water generation unit includes: an acoustic-wave generator that generates acoustic waves by absorbing heat from the exhaust gas pipe and giving the heat to working fluid, which transmits acoustic waves by oscillating, to cause the working fluid to oscillate; a transmission pipe that is internally filled with the working fluid and transmits acoustic waves generated by the acoustic-wave generator; and a cold-heat generator that generates cold heat to supply the cold heat to the exhaust gas pipe by receiving acoustic waves transmitted through the transmission pipe and giving heat to the acoustic waves.

Abstract: Methods and systems are provided for adjusting the opening of a scroll valve of a binary flow turbine. Scroll valve adjustments are used at different engine operating conditions to improve engine performance and boost response. Scroll valve adjustments are coordinated with wastegate and EGR valve adjustments for improved engine control.

Abstract: A supercharged internal combustion engine according to the present invention includes: a compressor arranged in an intake passage through which air that is taken into a combustion chamber flows and for supercharging intake air; an EGR passage that connects an exhaust passage through which exhaust gas that is discharged from the combustion chamber flows and a compressor upstream passage; an EGR valve for opening and closing the EGR passage; an intake bypass passage for releasing gas that has been supercharged by the compressor outside a compressor downstream passage; and an ABV for opening the intake bypass passage by opening when the gas that has been supercharged by the compressor is released outside the compressor downstream passage. The intake bypass passage connects the compressor downstream passage with the EGR passage on the side that is closer to the compressor upstream passage relative to the EGR valve.

Abstract: An internal combustion engine is coupled to an oxidation catalyst disposed upstream of a second catalytic device. A controller includes an instruction set executable to detect a cold start engine starting event, monitor first and second temperature sensors, control each of the fuel injectors to execute a first set of fuel injection events for each cylinder event in response to an output torque request, and execute a second set of fuel injection events for each cylinder event after cylinder top-dead-center. The second set of fuel injection events includes a final injection event, and a duration of the final injection event is determined based upon the first and second temperatures.

Abstract: In a first embodiment, a system, including an exhaust duct configured to flow an exhaust gas, and an air injection system coupled to the exhaust duct, wherein the air injection system comprises a first air injector configured to inject air into the exhaust duct to assist flow of the exhaust gas through the exhaust duct.

Abstract: There is disclosed a method of regenerating at least one aftertreatment device in an exhaust system of an internal combustion engine by changing a calibration of the exhaust gas recirculation system with the engine to increase temperature of exhaust gas provided to the at least one aftertreatment device, and further incrementally changing the calibration to obtain an exhaust gas temperature within a target regeneration temperature range.

Abstract: Systems and methods for diagnosing a sensor for an exhaust system may include perturbing an output signal from the sensor for the exhaust system. The method may further include monitoring an output signal from a controller for controlling a component affecting the exhaust system or an unperturbed output signal from the sensor and diagnosing the sensor based on the monitored output signal from the controller or the unperturbed output signal from the sensor. In another implementation, a first controller may output the output signal from the sensor to a second controller configured to have a predetermined response to output signal. The first controller receives a response from the second controller and diagnoses the sensor based on the received response.

Abstract: A vehicle is disclosed which includes: an engine; a catalyst purifying exhaust gas of the engine; a grille shutter adjusting an opening area of a radiator grille; and an electronic control unit configured to: (a) control an injection quantity of fuel to be supplied to the engine, (b) detect a malfunction of the grille shutter in a state where the grille shutter is closed, and (c) increase the injection quantity when the malfunction is detected in comparison to when the malfunction is not detected.

Abstract: A method for controlling fuel flow in a multi fuel engine is disclosed. An input power for operating the multi fuel engine at a desired engine speed is determined and a fuel flow rate based on the input power, one or more fuel properties and a specified fuel substitution ratio for apportioning the plurality of fuels is determined. Also, a correction factor for the fuel flow rate based on a desired charge density, wherein the desired charge density is based at least on a relationship between an engine load and charge density is determined and a corrected fuel flow rate, based on the determined correction factor, is output to a corresponding actuator of a fluid flow control device for the one of the fuels to cause the corresponding actuator to provide the one of the plurality of fuels at the corrected fuel flow rate.

Abstract: A vehicle is disclosed which includes: an engine; a catalyst purifying exhaust gas of the engine; a grille shutter adjusting an opening area of a radiator grille; and an electronic control unit configured to: (a) control an injection quantity of fuel to be supplied to the engine, (b) detect a malfunction of the grille shutter in a state where the grille shutter is closed, and (c) increase the injection quantity when the malfunction is detected in comparison to when the malfunction is not detected.

Abstract: A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.

Abstract: A controller is provided for an engine comprising urea-SCR catalyst, a urea-water supply section, a low pressure gas recirculating section including a low pressure EGR pipe forming a low pressure EGR passage and a low pressure EGR valve. The controller controls an amount of a fuel supplied to the engine, and an opening degree of the low pressure EGR valve. The controller supplies the urea-water to the urea-SCR catalyst in such a manner that an ammonia flowing out from the urea-SCR catalyst neutralizes an acid condensed water produced by a gas passing through the low pressure EGR passage.

Abstract: A particle separator for treating the exhaust gases of an internal combustion engine includes at least one metallic layer through which exhaust gas can flow. The metallic layer is located in a housing that includes an inlet opening, an outlet opening and a central axis. The housing is provided with at least one inspection or maintenance opening that laterally penetrates the housing and provides a passage through to the metallic layer. The particle separator can, in particular, remain operational without having to be dismantled or can autonomously remain fully open to a flow at all times. A motor vehicle having at least one particle separator is also provided.

Abstract: An exhaust port formed on one side portion of an engine body along the vehicle width direction, the exhaust port connected to an exhaust muffler arranged in an extending manner in the vehicle width direction along a rear edge of the vehicle body frame by way of an exhaust pipe passage means that introduces an exhaust gas from the exhaust port. The exhaust pipe passage means is arranged in an extending manner in the longitudinal direction of the vehicle while having a bent portion bent toward the center in the vehicle width direction from one side of the engine body in the vehicle width direction behind the engine body, as viewed in a plan view.

Abstract: Unique apparatuses, systems, methods, and techniques for control of engine systems are disclosed. One embodiment is a unique controls process providing engine start/stop functionality. In one form, the controls process includes engine stop controls which evaluate a plurality of engine stop request conditions and a plurality of engine stop capability conditions, as well as engine start controls which evaluate a plurality of engine start request conditions and a plurality of engine start capability conditions.

Abstract: An engine having two or more fuel injectors is disclosed, where at least one of the injectors is used to port fuel inject fuel into the cylinder when the air intake valve is open. The open valve port fuel injector is used to inject a fuel that has alcohol as a constituent and is the same fuel injected by another fuel injector. In other embodiments, the open valve fuel injector is used to inject an anti-knock fuel containing alcohol while a primary fuel, is introduced by another injector. The operation of the open valve fuel injector can be optimized to maximize the vaporization cooling. In other embodiments, the open valve fuel injector may be used in conjunction with direct injection of the primary fuel or the anti-knock fuel. Heavy EGR can be optimally used with the various embodiments.

Abstract: A case is connected between an outlet side of a turbocharger and an intake port of an engine. A cooling passage and a bypass passage are partitioned in the case to split intake air into two flows. A storage unit is formed in a bottom portion of the case to accumulate liquid. The cooling passage is located along a gravity direction to flow intake air from a lower side to an upper side. The bypass passage flows intake air to bypass the cooling passage. A valve controls opening of the cooling passage and the bypass passage on an inlet side or on an outlet side. The valve opens the bypass passage to forcedly supply at least a part of intake air, which is drawn into the case, through the storage unit and the bypass passage into the intake port.

Abstract: Various methods and systems for an engine driving an electrical power generation system are provided. In one embodiment, an example method for an engine driving an electrical power generation system includes adjusting an engine speed in response to a relationship between oxygen and fuel while maintaining a power transmitted to the electrical power generation system.

Abstract: At least one donor cylinder is coupled to an intake manifold. The intake manifold is configured to feed a mixture of air and a first fuel, or a mixture of air, the first fuel, and a second fuel to the at least one donor cylinder. At least one non-donor cylinder is coupled to the intake manifold and an exhaust manifold. The intake manifold is further configured to feed air, or a mixture of air and the second fuel to the at least one non-donor cylinder. An exhaust channel extend from the at least one donor cylinder to the intake manifold for recirculating an exhaust emission from the at least one donor cylinder to the at least one donor, and non-donor cylinders via the intake manifold.