Abstract: A method for operating a fuel-operated vehicle heater, wherein after receipt of a switch-off signal by a control unit of the fuel-operated vehicle heater, a shutdown phase is initiated, during which remaining fuel present in the fuel-operated vehicle heater is combusted, and wherein a restart phase is initiated by the control unit after receipt of a switch-on signal during the shutdown phase, without the shutdown phase being terminated after complete combustion of the remaining fuel.

Abstract: An object of the present invention is to provide an engine system control device capable of stabilizing a combustion state, while improving fuel economy by performing intake air heating. According to the present invention, there is provided an engine system control device which controls an engine system including an engine configured to combust air-fuel mixture, an intake air path configured to take air to the engine, and an intake air heating mechanism configured to heat the intake air, wherein a heating amount of the intake air is controlled depending on a combustion speed of the air-fuel mixture.

Abstract: A device for the injection and mixing of steam into a fluid stream. The device includes a cylindrically-shaped primary conduit having a longitudinal axis and circular cross-section for carrying the fluid stream. The primary conduit is provided with an inlet for accepting the fluid stream and an outlet for discharging the fluid stream along the longitudinal axis. A secondary conduit is joined to the primary conduit for discharging steam within the fluid stream along the longitudinal axis.

Abstract: A control apparatus for a diesel engine includes a neighboring temperature estimating section which estimates a temperature of a neighborhood of a glow plug that heats an interior of a cylinder upon startup, and a supercharging pressure control section which controls a supercharging pressure in such a way that a rotation fluctuation of the engine does not increase, on the basis of the estimated temperature of the neighborhood of the glow plug.

Abstract: An airflow preheating device, includes a heating pipe and a flow guide pipe, where the flow guide pipe is embedded in the heating pipe; a flow guide device is provided on an outer wall of the flow guide pipe; a ventilation pipe is provided inside the flow guide pipe; an air flow space is formed between the ventilation pipe and the flow guide pipe; an air flow enters between the flow guide pipe and the ventilation pipe from a top end of the ventilation pipe, and then enters between the outer wall of the flow guide pipe and an inner wall of the heating pipe via an air flow hole on a wall of the flow guide pipe, and flows out via the flow guide device. Because an optimized air flow channel is used, an outer wall of a smoking set is not easily heated.

Abstract: A fuel system includes an internal combustion engine, a fuel device and a heat exchanger. The internal combustion engine receives an air/fuel mixture and produces heated exhaust air. The fuel device receives fresh air and provides the air/fuel mixture that is received by the internal combustion engine. The heat exchanger receives the heated exhaust air from the internal combustion engine and fresh cool air, transfers heat energy from the heated exhaust air to the fresh cool air, and provides the fresh air to the fuel device. The provided fresh air is the fresh cool air that has received the heat energy.

Abstract: The present invention provides a fuel heating system for preheating a vegetable oil based fuel for use in a diesel engine, said fuel heating system comprising a fuel tank (1), a heating device (3), a heat carrier arrangement (4,6) comprising a liquid heat carrier, and a heat exchanger (6) arranged inside said fuel tank, wherein said heating device is arranged to use vegetable oil based fuel from said fuel tank for heating the heat carrier, said heat carrier arrangement allows transport of hot heat carrier from said heating device to said heat exchanger and transport of cold heat carrier from said heat exchanger back to said heating device, and said heat exchanger is arranged to allow heat transfer from said heat carrier to said vegetable oil based fuel in said fuel tank.

Abstract: The present invention provides a fuel heating system for preheating a vegetable oil based fuel for use in a diesel engine, said fuel heating system comprising a fuel tank (1), a heating device (3), a heat carrier arrangement (4,6) comprising a liquid heat carrier, and a heat exchanger (6) arranged inside said fuel tank, wherein said heating device is arranged to use vegetable oil based fuel from said fuel tank for heating the heat carrier, said heat carrier arrangement allows transport of hot heat carrier from said heating device to said heat exchanger and transport of cold heat carrier from said heat exchanger back to said heating device, and said heat exchanger is arranged to allow heat transfer from said heat carrier to said vegetable oil based fuel in said fuel tank.

Abstract: The present invention relates to a vehicle, having an internal combustion engine which is designed for combusting an ethanol-containing fuel, and an engine-independent air heating system. An exhaust passage of the engine-independent air heating system is disposed adjacent to a suction pipe of the internal combustion engine in order to heat the air in the suction pipe. Alternatively or additionally, the exhaust passage of the engine-independent air heating system is disposed adjacent to a fuel supply line of the internal combustion engine in order to heat the fuel in the fuel supply line. A connecting element or connecting openings are disposed between the exhaust passage of the engine-independent air heating system and the suction pipe in order to pass the exhaust gas of the engine-independent air heating system completely or partly into the suction pipe.

Abstract: An exhaust treatment device for a combustion system is disclosed. The exhaust treatment device may have a housing, and an injector disposed within the housing to deliver an injection fluid into a flow of exhaust. The exhaust treatment device may also have at least one fluid supply passage that is disposed within the housing and being in fluid communication with the injector to supply the injector with injection fluid. The exhaust treatment device may further have at least one purge passage disposed within the housing and in fluid communication with the injector to supply the injector with a purge fluid. The exhaust treatment device may additionally have a first valve element that is mounted to the housing and disposed at an entrance of the at least one purge passage The first valve element may be configured to provide a unidirectional flow of purge fluid to the at least one purge passage.

Abstract: The invention relates to a self-igniting internal combustion engine (10) with ether fumigation of the combustion air for vehicles, wherein to provide for ether fumigation, a feed means (1, 2, 3) is provided for an alkanol fuel in the flow direction, an exhaust gas heat exchanger (4) is provided for cooling a portion of the exhaust gas arising from the firing of the internal combustion engine (10) and for vaporizing the alkanol fuel fed while at the same time absorbing the thermal energy to be dissipated during cooling of the exhaust gas, and a catalyst (5) is provided for dehydrating the evaporated alkanol fuel to form ether, and wherein the feed means (1, 2, 3), the exhaust gas heat exchanger (4) and the catalyst (5) are connected to the combustion chamber of the internal combustion engine (10) and adapted in such.

Abstract: A snow blower is provided that includes a muffler and a heater box that has a top wall. The heater box has a plurality of side walls that extend from the top wall. The top wall and side walls define an interior of the heater box. One of the side walls defines a muffler aperture for use in venting exhaust gases from the muffler. The muffler is at least partially located in the interior of the heater box so that the side walls of the heater box surround at least a portion of all of the sides of the muffler.

Abstract: An engine system for a power unit is disclosed. The engine system includes an exhaust system having at least one exhaust treatment device and an air induction system having at least one heater. The heater is configured to raise the temperature of an intake flow in the air induction system in response to a physical property of the exhaust treatment device.

Abstract: Disclosed is an internal combustion engine which is to be mounted on automobiles or the like and in which an improvement has been achieved in terms of startability and combustion stability during warm-up operation. In an internal combustion engine of the type in which gas discharged from a combustion heater is introduced into an intake passage of the internal combustion engine, a fuel vaporizing glow plug is operated during the period from the starting of the internal combustion engine to the occurrence of complete explosion, whereby unburned vaporized fuel is supplied from the combustion heater to the internal combustion engine.

Abstract: A method and device for changing the rate of density between fluid hydrocarbon fuels and combustion air prior to ignition and combustion in residential, commercial and industrial combustion mechanisms, by extracting heat from the mechanism's combustion zone or flue area to reduce the density of the fuel prior to delivery to the mechanism burner at a constant, pre-set operating temperature of between 100 degrees Fahrenheit and the fuel's flash point temperature, while at the same time providing means to control combustion air temperature to a level such as to increase air density and significantly changing the mass ratio of fuel mass versus combustion air mass, hence oxygen mass, without increasing combustion air volume or fuel volume, thereby improving combustion efficiency, heat transfer efficiency and reduction in harmful stack emissions.

Abstract: A method and device for changing the rate of density between fluid hydrocarbon fuels and combustion air prior to ignition and combustion in residential, commercial and industrial combustion mechanisms, by extracting heat from the mechanism's combustion zone or flue area to reduce the density of the fuel prior to delivery to the mechanism burner at a constant, pre-set operating temperature of between 100 degrees Fahrenheit and the fuel's flash point temperature, while at the same time providing means to control combustion air temperature to a level such as to increase air density and significantly changing the mass ratio of fuel mass versus combustion air mass, hence oxygen mass, without increasing combustion air volume or fuel volume, thereby improving combustion efficiency, heat transfer efficiency and reduction in harmful stack emissions.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent a thermal damage to the structure of an intake system due to combustion heat emitted from the combustion heater. The engine includes the combustion heater operating at a cold time. Cooling water is warmed by heat of combustion gas emitted from the combustion heater when in combustion, thereby speeding up a warm-up of the engine and enhancing a performance of a car room heater of a vehicle mounted with the engine. In the thus constructed internal combustion engine having the combustion heater, fresh air entering an intake air passageway of the engine is mixed with the combustion gas of the combustion heater, whereby the fresh air becomes a combustion gas mixed intake air toward an engine body. A temperature of the combustion gas mixed intake air is obtained, and a combustion state of the combustion heater is controlled based on this temperature.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent a thermal damage to the structure of an intake system due to combustion heat emitted from the combustion heater. The engine includes the combustion heater operating at a cold time. Cooling water is warmed by heat of combustion gas emitted from the combustion heater when in combustion, thereby speeding up a warm-up of the engine and enhancing a performance of a car room heater of a vehicle mounted with the engine. In the thus constructed internal combustion engine having the combustion heater, fresh air entering an intake air passageway of the engine is mixed with the combustion gas of the combustion heater, whereby the fresh air becomes a combustion gas mixed intake air toward an engine body. A temperature of the combustion gas mixed intake air is −obtained, and a combustion state of the combustion heater is controlled based on this temperature.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent a thermal damage to the structure of an intake system due to combustion heat emitted from the combustion heater. The engine includes the combustion heater operating at a cold time. Cooling water is warmed by heat of combustion gas emitted from the combustion heater when in combustion, thereby speeding up a warm-up of the engine and enhancing a performance of a car room heater of a vehicle mounted with the engine. In the thus constructed internal combustion engine having the combustion heater, fresh air entering an intake air passageway of the engine is mixed with the combustion gas of the combustion heater, whereby the fresh air becomes a combustion gas mixed intake air toward an engine body. A temperature of the combustion gas mixed intake air is obtained, and a combustion state of the combustion heater is controlled based on this temperature.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent a thermal damage to the structure of an intake system due to combustion heat emitted from the combustion heater. The engine includes the combustion heater operating at a cold time. Cooling water in warmed by heat of combustion gas emitted from the combustion heater when in combustion, thereby speeding up a warm-up of the engine and enhancing a performance of a car room heater of a vehicle mounted with the engine. In the thus constructed internal combustion engine having the combustion heater, fresh air entering an intake air passageway of the engine is mixed with the combustion gas of the combustion heater, whereby the fresh air becomes a combustion gas mixed intake air toward an engine body. A temperature of the combustion gas mixed intake air is obtained, and a combustion state of the combustion heater is controlled based on this temperature.

Abstract: In an internal combustion engine with a combustion heater for elevating a temperature of an engine related element, an object of the present invention is to provide a technique that may effectively performs temperature elevation of an exhaust gas purifying device.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent a thermal damage to the structure of an intake system due to combustion heat emitted from the combustion heater. The engine includes the combustion heater operating at a cold time. Cooling water is warmed by heat of combustion gas emitted from the combustion heater when in combustion, thereby speeding up a warm-up of the engine and enhancing a performance of a car room heater of a vehicle mounted with the engine. In the thus constructed internal combustion engine having the combustion heater, fresh air entering an intake air passageway of the engine is mixed with the combustion gas of the combustion heater, whereby the fresh air becomes a combustion gas mixed intake air toward an engine body. A temperature of the combustion gas mixed intake air is obtained, and a combustion state of the combustion heater is controlled based on this temperature.

Abstract: An internal combustion engine having a combustion heater is capable of surely effecting an ignition of the combustion heater. In the engine having the vaporization type combustion heater operated at a cold time to raise a temperature of engine cooling water, the combustion heater has a glow plug for forming a latent flame by igniting a combustion fuel, a combustion camber for growing the latent flame formed by the glow plug into flames, an air supply pipe for supplying the combustion chamber with the air for combustion, a combustion gas discharge pipe for discharging the combustion gas from the combustion chamber, and a communicating passageway for connecting the air supply passageway to the combustion gas discharge pipe. A valve means provided in the communicating passageway controls the connecting passageway so as to open and close.

Abstract: Disclosed is an internal combustion engine having a combustion heater of a type of introducing a combustion gas into an intake system, in which an air/fuel ratio is prevented from becoming rich, and NOx and particulate matters are to be reduced even when the internal combustion engine is combined with an EGR device. The internal combustion engine has the combustion heater provided in an intake system, for speeding up warm-up of the internal combustion engine and enhancing a performance of a car room heater by guiding the combustion gas emitted from the combustion heater to a mainstream pipe and warming up the cooling water with the combustion heat held by the combustion gas. The internal combustion engine comprises the EGR device and a recirculated exhaust gas quantity control device for controlling a quantity of an EGR gas recirculated by the EGR device according to an introduction quantity of the combustion gas into the mainstream pipe. The EGR device is stopped during operation of the combustion heater.

Abstract: A control system of a combustion heater for an internal combustion engine to provide satisfactory combustion in a combustion chamber of the internal combustion engine even when an exhaust gas produced by the combustion heater is introduced into an intake system of the internal combustion engine. The combustion heater 7 performs a combustion with a fuel supplied by a pump 7b and fresh air supplied by a fan 7c. The exhaust gas produced by the combustion heater 7 is introduced into an intake passageway 2 of an engine body 1. An electronic control unit 15 controls the combustion state of the combustion heater by controlling the number of rotations of the pump 7b and the fan 7c based on the fuel quantity supplied to the engine body 1. Thus, satisfactory combustion in the combustion chamber of the engine body 1 is accomplished.

Abstract: In the compression-ignition internal combustion engine having the combustion heater for introducing combustion gas into a mainstream pipe constituting the intake system of the engine, a fuel injection timing by a injector of the engine is advanced as an output of the combustion heater is increased.

Abstract: An internal combustion engine having a combustion heater is constructed to prevent an influence by a blow-by gas and to maintain well the combustion in the combustion heater even when introducing the combustion air of the combustion heater from an intake passage of the internal combustion engine. The combustion heater introduces a fuel by using a pump and the air from an air introducing passage by using a fan, and thus performs a combustion. The air introducing passage is connected to an intake passage. A blow-by gas introducing passage is connected to the intake passage. An aperture, connected to the intake passage, of the blow-by gas introducing passage is disposed more downstream of an intake flow than an aperture, connected to the intake passage, of the air introducing passage. With this configuration, an inflow of the blow-by gas into the combustion heater is restrained, and the combustion can be well maintained.

Abstract: A filter system forming part of the fuel system of a compression ignition engine includes a housing which carries a filter element. The housing has a first inlet which opens into a chamber defined between the housing and chamber the first inlet being connected to a fuel tank, and a first outlet for fuel which has passed through the element and which is connected to a fuel injection pump. The housing has a second inlet which is connected to the chamber and receives heated fuel from the fuel pump and a second outlet which is connected to the chamber through a port. The second outlet is connected to the fuel tank. A third outlet is connected to the second inlet and is connected to a flame type starting aid of the engine. Valve means responsive to the temperature of the fuel in the chamber controls fuel flow through said port.

Abstract: In a flame glow plug for a Diesel engine with an insert structure mounted on the plug body for the supply of fuel thereto, wherein the plug body includes in a vaporizing tube, a heating rod arranged in spaced relationship to the vaporizing tube such that an annular gap remains in which a vaporizing sieve is disposed and the heating rod extends axially beyond the vaporizing tube and is protected there by a flame tube firmly mounted on the plug and projecting into the intake airflow path when the glow plug is installed in an engine, the flame tube has circumferentially spaced air inlet openings and the vaporizing tube extends to the air inlet openings of the flame tube, the vaporizing tube further has a collar forming a narrow annular gap around the heating rod for supporting the vaporizing sieve and preventing flame backflashing through the gap and at least one row of openings arranged circumferentially below the collar.

Abstract: A lightweight back-pack generator set having a spark-ignited engine operating on middle distillate fuels (e.g., JP-5, JP-8 and F-34) has been provided. The generator set includes a back-pack frame; an alternator; and a spark-ignited combustion engine adapted to operate on a middle distillate fuel. The engine uses a preheater for heating the intake manifold to facilitate start-up operation of the engine. The present invention also provides a simple and inexpensive method for converting a spark-ignited gasoline engine to operate on a middle distillate fuel for providing a lightweight engine suitable for driving an alternator, a portable generator, or other portable equipment.

Abstract: Flame glow unit for heating the combustion air for a combustion device, especially an internal combustion engine. A flame glow plug, which is placed in the air duct of the combustion device, is supplied by a control device with current and fuel, and forms an ignitable air-fuel mixture together with the in-flowing air, which is ignited by a heating element provided in the flame glow plug. The resulting flame heats the air in the air duct. The air current in the air duct is measured by an air current measuring device and the control device controls the fuel supply of the flame glow plug in response to the measurements which the control device receives from the air current measuring device.

Abstract: Flame starting unit for a combustion device, especially an internal combustion engine, for preheating the combustion air. A flame glow plug is placed in the combustion air duct of the combustion device and is supplied with fuel and current by a control device. The functioning of the flame starting unit is monitored by a monitoring device, which displays occurring malfunctions.

Abstract: A process and device for heating the intake air in internal-combustion engines by means of a flame starting system is disclosed which contains at least one heater plug and has a control unit which supplies the heater plug with voltage for a specific preheating time.

Abstract: The invention relates to a flame-type heater plug for an air-compression fuel-injection internal-combustion engine, especially a direct-injection and superchargable internal-combustion engine. The heater plug includes a heater tube arranged in the course of a plug housing and protective tube and has an integrated first control coil at a level of passage orifices in the protective tube, heating coil and a second control coil arranged outside the protective tube at a side of the heating coil opposite the first control coil. A heater-tube portion which projects from the protective tube and is located in the flow path of the intake air in the suction pipe of the internal-combustion engine is provided in which the second control coil is arranged for further influencing the power of the heating oil.

Abstract: An air conditioner system for automotive vehicles has an evaporator disposed in a duct and selectively operative to cool air flowing through the duct, and a combustion heater disposed outside the duct and held in air flow communication with the latter for heating air drawn into the duct. The air conditioner system thus constructed can be applied to a vehicle having a non-water-cooled engine and is effective to cause a sudden increase in the temperature of air to be supplied to the vehicle passenger compartment.

Abstract: An electric starting aid for an internal combustion engine has a metal body having an integral tubular member about which is located a fuel pervious insulating sleeve. Surrounding the sleeve is an electric heating element. Fuel can be supplied to the interior of the tubular member and flows through an aperture and the sleeve, to the surface of the sleeve where it is vaporized by the sleeve to produce an ignitable air/fuel mixture.

Abstract: An intake burner is disclosed for use in an internal combustion engine having an air intake system including an air intake tube, comprising an outer tube adapted to be attached to the air intake tube, a heater mounted in the outer tube and made of a ceramic material with a heating resistor embedded therein. A holder surrounds the heater in spaced relation thereto and together with the heater defines a vaporizing and a combustion region around the heater for vaporizing supplied fuel along a surface of the heater and for burning vaporized fuel supplied from the vaporizing region. Fuel feed means directs fuel into the vaporizing region around the heater, and a support member attaches the heater to the outer tube.

Abstract: A diesel internal combustion engine with a soot filter in the exhaust system is equipped with a controllable soot burn-off device. The latter comprises a burner arranged in the soot filter and is operable with fresh air separately fed to the soot filter.In order to render the soot burn-off device useful for several purposes, this device is switchable to serve as a warm-up means which heats up the engine and or its running and operating media during or before operation.

Abstract: A return line communicates excess fuel from the injectors of a diesel engine to a fuel tank and is connected to a nipple on a filler pipe of the fuel tank. A dam wall is provided inside the pipe over an inlet from the nipple and forms a small reservoir for fuel which can be fed via a T-connection and branch line to a known nozzle and ignition system which burns fuel in the intake manifold to facilitate cold starting.

Abstract: A heating arrangement for preheating combustion air flowing through an intake manifold of an internal combustion engine, the heating arrangement including a pot-shaped housing forming a combustion chamber into which an ignition device and a fuel injection nozzle project. A shut off valve controls an inflow of fuel and a shield sheet serves to shield the combustion flame. The pot-shaped housing is located in a flow path of the combustion air and is covered on its open side by a holder. The holder is fastened to the intake manifold and supports the ignition device, fuel injection nozzle, and shut off valve. The housing includes openings in an upstream wall portion from which the shield sheet projects into the housing in a vicinity of the opening in such a way that the shield sheet separates the combustion chamber from the fuel injection nozzle chamber.

Abstract: A burner assembly (18) for heating the intake air of an internal combustion engine (2) including a burner housing (32) containing a fuel passage (52, 66, 70, 72) and a glow plug (87) for heating the burner housing (32) upon start up of the burner to melt fuel wax deposits in the fuel passage (52, 66, 70, 72). The glow plug (87) includes a metal sheath (88) designed normally to contact air when energized at a rated level. The burner housing (32) includes a cavity (86) shaped to receive the glow plug (87) with a minimal clearance (a) large enough to prevent interference during assembly but small enough to allow metal-to-metal heat transfer into the housing (32) when the glow plug (87) is energized at twice its rated level.

Abstract: An alcohol fuel burner and decomposer in which one stream of fuel is preheated by passing it through an electrically heated conduit to vaporize the fuel, the fuel vapor is mixed with air, the air-fuel mixture is ignited and combusted, and the combustion gases are passed in heat exchange relationship with a conduit carrying a stream of fuel to decompose the fuel forming a fuel stream containing hydrogen gas for starting internal combustion engines, the mass flow of the combustion gas being increased as it flows in heat exchange relationship with the fuel carrying conduit, is disclosed.

Abstract: A heater for the liquid coolant in an internal combustion engine which includes a tank connected to the engine block for the circulation of engine coolant, the tank having an enclosure within its interior in sealed, heat transfer relationship with the liquid coolant in the tank and outside air is introduced into the enclosure and heated by a burner for subsequent discharge from the enclosure in a heated condition. After the transfer of heat to the liquid coolant, the heated air discharged from the enclosure is conducted to the intake manifold for heating the manifold system prior to engine starting.

Abstract: A fuel injection apparatus for use with an internal combustion engine provides for the injection of a fuel carrying air stream into the intake manifold of the engine adjacent the intake port of each cylinder. The apparatus includes a fuel proportioning device which releases a quantity of fuel to the fuel carrying air stream in accordance with the rate of air flow in the engine air intake.