Abstract: A modular intake heater is provided for an internal combustion engine. The heater includes a first heater subassembly, a second heater subassembly, an access panel coupled to an intake, and a retainer mechanism coupling the first heater subassembly and the second heater subassembly to the access panel.

Abstract: A modular intake heater for an internal combustion engine. The heater includes a first holder, a second holder, a heating element coupled to the first holder, biasing means for urging one of said first holder and said second holder away from the other of said first holder and said second holder, and a retainer mechanism coupling the first holder to the second holder against the urging of the biasing means.

Abstract: A fuel injection valve for an internal combustion engine includes a metering injection valve and a fuel vaporizer that is arranged upstream from an outlet spray orifice of the injection valve (10) on the intake end and has a vaporizer area with at least one assigned electric heating element. To assure in particular that the fuel vaporizer guarantees very good fuel processing in all heating states, i.e., in heating operation for complete or partial vaporization and in the unheated state, the vaporizer area that accommodates at least one heating element is closed at the outlet end by an outlet valve.

Abstract: A method operates an improved internal combustion engine by heating the fuel before entry into the cylinder, at least during the cold-start phase of the engine. In order to undertake the heating step in a favorable way, at least areas in the region of an intake valve are irradiated with an electromagnetic radiation of radiation source, and thereby heated without contact. As a result, liquid fuel in the valve region is heated by contact with the areas of the valve region, and condensation of the fuel is at least reduced.

Abstract: A compact preheater for heating air before it is fed to the intake of an internal combustion engine that is adaptable to fit within existing space in an engine compartment, including a versatile mounting system. The preheater includes heating coils and a blower adapted to be powered by an engine battery, with a timer to automatically de-power the heater after a predetermined time. The preheater can be used as an add on part without any alteration or change in existing engine parts.

Abstract: An apparatus for reducing noxious gases in the exhaust emissions of an automobile is disclosed. During engine cold start, a cold start injector having a heater downstream of the injector outlet vaporizes fuel so that a leaner air-fuel mixture can be used, thereby reducing engine emissions before the engine and catalytic converter warm up. The heater includes various configurations for swirling the fuel and exposing it to large surface areas for improving the vaporization of the fuel. A tapered bore surrounding the throttle allows for precise air flow control into the cold start device during engine warm-up.

Abstract: A heating device for use in an internal combustion engine for heating the air entering the cylinder head from the intake manifold. The heating device includes a frame having a body defining an air intake opening and a hanger extending from the body. The heating device further includes a first resistance ribbon and a terminal assembly coupled to the frame, electrically connected to the first resistance ribbon and electrically connectable with a power source. Finally, the heating device includes securing means for coupling the first resistance ribbon to the hanger in a vertical orientation.

Abstract: A fuel delivery system for an internal combustion engine having an intake air metering device, leading to individual combustion chambers several fuel injection valves, each of which is assigned to one combustion chamber, and a central fuel vaporizer to which fuel can be supplied by a fuel metering device. To reduce pollutant emissions during the warm-up phase of the internal combustion engine after start-up, fuel vapor generated in the fuel vaporizer can be added to the intake air for the combustion chambers downstream from the intake air metering device.

Abstract: A carburetor anti-icing apparatus and method for a marine drive is provided for heating a carburetor to a temperature above that at which ice may form in the idle and progression circuits of the carburetor. Several heaters, heat sources, and methods are disclosed for heating the carburetor. In one embodiment an electrical heating element is mounted to the carburetor body near the fuel orifices which make up the idle and progression circuits. In another embodiment, engine cooling water is circulated through a heater housing mounted to the carburetor body. In yet a further embodiment, engine exhaust from the marine drive is conveyed through the heater housing mounted to the carburetor body. A thermally conductive gasket is used to improve heat transfer. The carburetor anti-icing apparatus and method also improves low speed running performance due to the improved fuel vaporization resulting from the increased temperature in the progression circuit.

Abstract: A method and system for estimating air/fuel ratio of an internal combustion engine having a fuel vaporizer device calculates the rate of fuel evaporation based on temperature of the vaporizer device to estimate air/fuel ratio during a cold-start. In one embodiment, a temperature of the fuel vaporizer device is determined directly by an appropriate sensor. In another embodiment, the temperature is determined using a transient heat transfer model based on the air flow rate through the device and the exit temperature of the air/fuel mixture. The temperature is used to determine the amount of energy entering the fuel vaporizer device as well as the amount of energy leaving the fuel vaporizer device so as to determine the amount of fuel vaporized by the fuel vaporizer device. The air/fuel ratio is then estimated based on the amount of fuel vaporized.

Abstract: A fuel injection arrangement for an internal combustion engine which has at least one combustion space and at least one intake pipe leading to this combustion space, with two fuel injection valves opening into the intake pipe upstream from at least one inlet valve. One fuel injection valve has a heater adapter. While only the fuel injection valve with the heater adapter is operated during cold start and the warm-up phase of the internal combustion engine, to a great extent, and the fuel injection valve without a heater is not in operation, a switch from one fuel injection valve to the other takes place at a point in time which is determined on the basis of the value of various operating parameters. The fuel injection arrangement is particularly suitable for use in mixture-compressing, outside-ignition internal combustion engines.

Abstract: A porous element fuel vaporizer to be used in conjunction with internal combustion engines. The vaporizer, comprising a fuel injector in conjunction with a porous element, wherein during cold operations the porous element heats and vaporizes the fuel exiting the fuel injector. Since during cold operations an engine consumes more fuel to compensate for liquid fuel precipitating inside, an important feature of this combination involves eliminating precipitate during cold starts to reduce fuel consumption and decrease engine emissions.

Abstract: A heated assembly is provided for vaporization of fuel in an internal combustion engine. The heated assembly includes a grid disposed in an inlet runner of the internal combustion engine. The assembly also includes structure for heating the grid during cold start of the internal combustion engine and vaporizing fuel in the inlet runner of the internal combustion engine.

Abstract: An apparatus for heating a fuel comprising a block with a passageway, having an output and an input, for conducting fuel to be heated is disclosed. The block is composed of a heat conductive material. A heating element, embedded in the block, heats the block which conducts the heat to the fuel flowing through the passageway heating it to a predetermined temperature.

Abstract: A fuel feed device for a gas engine includes a thermally insulated cartridge case for receiving therein a disposable gas cylinder or cartridge. The cartridge case has a built-in temperature sensor for detecting the temperature of the gas cartridge, and a built-in electric heater for heating the gas cartridge. The electric heater is controlled such that the temperature detected by the temperature sensor is kept within a predetermined temperature range. A working machine driven by the gas engine is also disclosed.

Abstract: An engine e.g.

Abstract: An internal heater for a fuel injector includes an array of plates of a positive temperature coefficient (PTC) material arranged about the valve element in a square tube shape, and surrounded by a heat insulating polytetrafluorethylene sleeve. The plates are preferably coated with polyimide to be protected from the fuel which flows over both surfaces of the plates. Electrical connections are established by inner and outer bands attached to the plates, with a conductive disc having tabs extending to the bands. Spring-loaded contact pins located radially outward from a seal on the disc have wires extending to the connector body contacts of the injector.

Abstract: Apparatus for heating and vaporizing a liquid hydrocarbon fuel supplied to an internal combustion engine includes a housing having an inlet and an outlet. Spaced baffle members are located within the interior of the housing which divide the housing into segments. Openings are provided in the baffle members which allow for the passage of the fuel and cause the fuel to deviate from a straight line during passage through the housing. The baffle members and the housing are heated to promote vaporization of the liquid hydrocarbon fuel. Exhaust may be introduced into the interior of the housing and mixed with the vaporized and heated fuel. Further heating of the mixture can result in reformation of at least some of the mixture prior to its introduction into an internal combustion engine.

Abstract: A heating device for use in the cylinder head of an internal combustion engine for heating the air/fuel mixture entering the cylinder head from the intake manifold. The heating device includes a frame or mounting member supporting an electric heating element having a plurality of resistance ribbons coupled to the mounting member by a plurality of mounting posts preferably formed by a plurality of threaded bolts. A power source may be electrically connected to one end of the heating element thereby providing an electric current which passes through the resistance ribbons. A securing arrangement, including a plurality of nuts threaded to cooperate with the threaded bolts and a plurality of conducting and insulating spacers disposable on the bolts, are provided to separate and rigidly couple the resistance ribbons to the mounting posts as a result of the compressive forces generated by the tightening of the bolts relative to the threaded nuts.

Abstract: A management system of an engine having a hot operating system (a catalytic converter or fuel vaporiser) and a rapid heating system for the hot operating system includes a clock and means to operate the clock after the engine has stopped where the clock operates to issue a signal indicating the time since the last engine switch off. An estimator is coupled to the clock for estimating the temperature of the hot operating system prior to restarting the engine on the basis of signals from the clock indicating the time since last engine switch off and a heating system controller controls the rapid heating system in dependence upon the estimated temperature of the hot operating system prior to restarting the engine.

Abstract: The invention relates to a method for forming a fuel-air mixture and to a fuel supply device for an internal combustion engine, having an intake manifold, into which an air intake tube with an aspirated air metering device disposed in it discharges and to which the intake tubes leading to individual combustion chambers are connected. A plurality of fuel injection valves are provided, each of which is assigned to one combustion chamber, and having a central fuel vaporizer to which fuel can be supplied by means of a fuel metering device. To form a fuel-air mixture, the fuel to be supplied to the engine is vaporized and the fuel vapor is supplied to the aspirated air. In order to lower pollutant emissions after starting during the warmup phase of the engine, vaporization of the fuel is done at relatively low temperatures, so that the fuel vapor produced essentially comprises only highly volatile fuel components.

Abstract: A fuel injection system for a combustion engine having an injection valve with a fuel vaporizer into whose inlet orifice fuel can be injected from the injection valve and out of whose outlet orifice a fuel stream is discharged, and having an air supply system that supplies air to the fuel vaporizer for mixing with the fuel stream. To improve the fuel delivery from the fuel vaporizer, the air supply system has an air blow-out device mounted in the area of the outlet orifice of the fuel vaporizer through which the air to be added to the fuel stream is supplied to the fuel stream discharged from the fuel vaporizer.

Abstract: A fuel heater for heating liquid fuel under pressure for use in an injector system-injection engine includes a pill 5 made of material with positive temperature coefficient (PTC) with a heatsink member 6, 7 covering both the top and bottom surface of the pill. At least one narrow, preferably spiral-shaped groove 15, 16 extends on either side of the PTC pill, either in the PTC material or in the heatsink material, or in both materials to carry fuel supplied under pressure. The fuel flows into the groove at one side of the pill from a central region of the pill towards the edge of the pill, and then into the groove at the other side of the pill from the edge towards the central region while being heated by the pill. The narrow groove restricts the flow of fuel to keep it under pressure while being heated which then, in turn, provides for the fuel to abruptly convert from a liquid to a gaseous state upon exiting the injector system.

Abstract: A fuel injection device provides a heating element that heats a fuel jet, the heating element being moved temporarily into the fuel jet downstream of a spray opening of the fuel injection valve and otherwise remaining outside the fuel jet. Improved fuel atomization of the fuel jet is thereby obtained or maintained. The fuel injection device can be used, for example, in mixture-compressing, applied-ignition internal combustion engines.

Abstract: An electric motor used to control the butterfly valve in an engine is supplied with increased dissipating energy. The mechanical link between the electric motor and the butterfly valve, preferably combined with favorable heat conductivity of the inlet pipe material in the area of the butterfly valve, facilitates transfer of the electric motor's dissipating heat to the butterfly valve nozzle.

Abstract: A fuel vaporization device for an internal combustion engine comprising a vaporization chamber, a liquid fuel inlet to the chamber including a fuel distributor having the capacity to inject tiny fuel droplets into the chamber, an ambient air inlet to the chamber to allow ambient air to mix with the fuel droplets, an annular ambient air distribution ring having circumferentially spaced air distribution inlet holes, positioned upstream of the vaporization chamber, and having an axial outlet surrounding the fuel distributor, at least one turbulence generator in the chamber for creating ambient air turbulence for mixing fuel droplets and ambient air, at least one heater in the chamber to convert the fuel droplet-ambient air mixture to a homogeneous gaseous air-fuel mix as the mixture passes through the chamber, a heater controller operably associated with the heater and preset to regulate thermal output from the heater responsive to temperature of the gaseous air-fuel mix to prevent the temperature from exceeding

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 heating module for a mixture-compressing combustion engine which is arranged between an induction pipe and a cylinder head of the combustion engine. The induction pipe, the heating module and the cylinder head delimit at least one intake port in which at least one electrically heatable heating element is arranged which constitutes a component of the heating module. The heating module is connectable with connecting terminals to an electric current source and the joining surfaces between the induction pipe, the heating module and the cylinder head are sealed by a sealing device. The heating module includes at least one thin plate made of metallic material. A conductor made of electrically conductive material is secured on the plate. The sealing devices are constructed in one piece with the heating module on the side facing the induction pipe and the side facing the cylinder head.

Abstract: A carburetor anti-icing apparatus and method for a marine drive is provided for heating a carburetor to a temperature above that at which ice may form in the idle and progression circuits of the carburetor. Several heaters, heat sources, and methods are disclosed for heating the carburetor. In one embodiment an electrical heating element is mounted to the carburetor body near the fuel orifices which make up the idle and progression circuits. In another embodiment, engine cooling water is circulated through a heater housing mounted to the carburetor body. In yet a further embodiment, engine exhaust from the marine drive is conveyed through the heater housing mounted to the carburetor body. A thermally conductive gasket is used to improve heat transfer. The carburetor anti-icing apparatus and method also improves low speed running performance due to the improved fuel vaporization resulting from the increased temperature in the progression circuit.

Abstract: A fuel atomization device 10 is provided for an internal combustion engine having a fuel injection system with fuel injectors 15. The fuel atomization device is sealingly secured on a nozzle lip of the fuel injector nozzle. The device includes a base 1 in which a plurality of heating elements and profiled vaporizer contact baffles 3 are arranged in a sandwich-like manner. Vaporizer chambers 8 are formed between the heating elements 2 and the vaporizer contact baffles 3 for providing a passage for the fuel through the base 1. The fuel undergoes a rise in temperature and pressure while in the device; and as it exits the device at fuel outlet 6, it is atomized fuel at a lower pressure.

Abstract: A heating device for heating an item such as a carburetor uses a first PTC heating element 12 positioned compactly within a housing 10 which is directly adjacent the item to be heated. A Second PTC element 14 having a great electrical resistance increase at a prescribed temperature level is also compactly contained in the housing and is electrically connected in series to the first PTC element 12. This second PTC element 14 restricts the electric current flow through the device when the ambient temperature exceeds the prescribed temperature level.

Abstract: A heating device for use in the cylinder head of an internal combustion engine for heating the airflow entering the cylinder head from the intake manifold. The improved heating device includes an electric heating element coupled to a frame which includes a perimeter mounting member and a recessed body portion. An aperture is formed in the recessed body portion to accommodate a terminal assembly that is adapted to pass through said aperture and a bore formed in the cylinder head. A power source may be electrically connected to the portion of the terminal assembly that extends beyond the cylinder head. The improved heating device allows the heating element to be recessed into the cylinder head thereby permitting the cylinder intake airflow to be heated without significantly increasing the distance between engine parts located above and below the heater.

Abstract: A fuel heating device and process is provided that allows for easier cold-starting of diesel engines when the outside temperature is -10.degree. F. (minus ten) or less. A 5 Watt heating element is used so that heat dissipates to the outside environment at a rate that prevents the fuel from overheating and, possibly, exploding by keeping the temperature of the fuel less than or equal to about 100.degree. F.

Abstract: A fuel heating device and process is provided that allows for easier cold-starting of diesel engines when the outside temperature is -10.degree. F. (minus ten) or less. A 5 Watt heating element is used so that heat dissipates to the outside environment at a rate that prevents the fuel from overheating and, possibly, exploding by keeping the temperature of the fuel less than or equal to about 100.degree. F.

Abstract: A modular fuel line heating apparatus is shown and described. In a preferred embodiment, a length of heat tape is coupled to a feed-through device, the feed-through device being adapted to detachably attach to various fittings, depending upon the desired location of the heat tape. The heat tape may be placed in a fuel draw tube, or in a hose of the fuel line, or in both, depending on the desired configuration and severity of operating conditions. A temperature sensor is provided in the fuel line to sense a temperature of the fuel as it flows through the fuel line, the temperature sensor activating the heat tape when the temperature of the fuel drops below a minimum desired temperature, and deactivating the heat tape when a maximum desired fuel temperature is exceeded.

Abstract: A heating module for an internal combustion engine with external mixture formation and fuel injection and at least one intake port and one injection nozzle is disclosed. An electrically heatable heating element, which can be surrounded by flow on all sides, is arranged in the intake port, the heating element being capable of connection to an electrical power supply by means of terminals. The heating element is formed by a laminated composite part which has a trough-shaped cross section transverse to the direction of flow.

Abstract: Liquid fuel is burned by feeding a mixture of a liquid together with liquid fuel which has been pre-gasified by rapid heating into a combustion zone. The liquid fuel is gasified by contact with a hot body. An internal combustion engine comprises a heated chamber having a heater, an air inlet and a fuel inlet. The mixture of gasified fuel and air is then introduced into the inlet manifold of the engine. Atomized liquid fuel and air is also inducted into the engine in a conventional manner, such as via a carburettor.

Abstract: An organization wherein each fuel injector includes a heat blanket secured thereabout directing heat from electrical resistance heating, exhaust pipe heating, and the like to effect heating of the fuel injector body and enhance vaporization of fuel directed into an associated combustion chamber.

Abstract: A gasifying device is fed oil from the return spill rail of a diesel engine, or from a reservoir of oil and gasifies the lighter fractions of the oil using an electrical heater, the gasified products being fed to the air intake manifold of the engine. In one embodiment unvaporized oil is fed from the gasifying device to the oil supply line to the engine, thereby avoiding a build-up of heavy oil components in the device. Several embodiments are disclosed. The device improves the handling performance of a vehicle fitted with the engine, the exhaust emissions, and the fuel economy. The device may also be fitted to a petrol engine.

Abstract: A fuel supply control device for an internal combustion engine in which fuel is injected from a fuel injection device (6) in an intake port (2.1) and air that flows into the intake port is mixed with the injected fuel to be supplied to combustion chamber (1) is shown, in which there are provided an intake control valve (20, 30) having a heater (7.3, 7.4) in the intake port and being capable of opening and closing the mixed gas flow passage. Control circuits (12, 13) carry out opening and closing position control of the intake control valve (20, 30) so that, at least during the time when the heater (7.3, 7.4) generates heat, the portion of the heat-generating region of the intake control valve (20, 30) may be located in the fuel injection range, with the valve (20, 30) functioning as a variable heater, variable intake valve and an AD port.

Abstract: An apparatus (16) for preheating combustion fluids such as air, fuel or fuel-air mixtures upstream of the combustion chamber in an internal combustion engine (10). The apparatus (16) generally includes a heat exchanger (18) and an assembly (46) for heating the heat exchanger. The improvement involves constructing the heat exchanger (18) from a plurality of closely-packed beads (20) each having a spherical shape and each comprised of homogeneous aluminum filling the entire space within the outer spherical shape to provide a high surface area heat exchanger for heating the combustion fluid as the fluid passes around the beads.

Abstract: The invention relates to new and useful improvements in those types of internal combustion engines which employ a single poppet valve to alternately control both the intake and exhaust flows through the same valve port. The exhaust and intake air interact within a common manifold wherein mixing is prevented by means of pneumatic elements comprising a nozzle and diffuser combination which direct the flow. The invention improves the separation of intake air and exhaust gases within the manifold of engines of this character by curving the flow axis of the diffuser such that its exit plane is more or less aligned with the logitudinal flow axis of the exhaust pipe. A means of throttling the engine by proportionally distributing the intake air within the said manifold between the airchest and exhaust gas circuits in a manner relative to the engine speed is a further improvement.

Abstract: The present invention relates to the engine-building industry and can find application in the fuel feed system of internal combustion engines for preconditioning part of the flow of a rich fuel-air mixture fed to the main flow to decompose liquid fuel and convert it into a gas. A technical aim of the present invention consists in an increased fuel economy of the engine, reduced toxicity of exhaust gases, and use of a cheaper low-octane fuel. A method for preparing fuel-air mixture consists in that the flow of an overrich fuel-air mixture is additionally heated, before mixing it with the other flow of fuel-air mixture, by passing it through a promoter heated above the mixture ignition temperature, thus providing repeated contact of the flow with the promoter surface.

Abstract: A method for controlling a heater of a carburetor and an apparatus therefor. The method includes the steps of: setting a heater pre-heating temperature condition so as for the fuel to be vaporized at the optimum state; setting a heater temperature variation rate properly in accordance with the variation of the intra-room temperature; setting a heater temperature variation rate in relation with the latent heat of the material of the heater; controlling the phase angle of an ac power in accordance with the instructions of a microcomputer; and driving the heater with the variable ac power. Thus a proper vaporizing atmosphere is formed in relation with the variations of the surrounding conditions, thereby contributing to the full combustion of the fuel.

Abstract: A fuel supplying device for an internal combustion gasoline engine in which, a loss of air pressure due to the heater is reduced, the heater efficiency is improved, and which is applicable to a multi-point injection system. The fuel supplying device for an internal combustion gasoline engine includes a fuel heating heater 3 provided in the suction pipe 6 of the engine in such a manner that it is extended along the inner wall of the suction pipe 6, so that a loss of air pressure is reduced. One of the plurality of sprays of fuel jetted by a multi-spray type fuel injection valve 7 is applied to the heater, so that the heater efficiency is improved. The fuel injection valve 7 is provided for each of the cylinders of the engine.

Abstract: A heating device for injected fuel in an internal combustion engine is disposed at an upper wall of an intake port. The heating device includes a casing and a plurality of fins integrally connected to a lower plate of the casing. A heater is disposed between the intake port and the casing. The fins are arranged to downwardly extend from said supporting member and along the injected direction of the injected fuel. Therefore, the atomization of the injected fuel is accelerated by the heating of the heating device.

Abstract: A fuel supply apparatus for an internal combustion engine includes a first fuel injector provided for each cylinder of the engine for injecting fuel into an intake pipe of the engine. A second fuel injector is disposed at a location upstream of the first fuel injector for injecting fuel into the intake pipe independently of the first fuel injector. A heater in the form of an electric heating plate is disposed on the inner surface of the intake pipe at a location between the first and second fuel injectors for heating and evaporating the fuel injected from the second fuel injector.

Abstract: An internal combustion engine has a carburetor for mixing fuel with air entering through an inlet. A heat exchanger is mounted onto the carburetor air inlet so that heat from the heat exchanger is conducted to the carburetor housing. The heat exchanger has a plurality of channels through which air from an air cleaner pass on the way to the carburetor. An electric heating device attached to said heat exchanger and a first thermostat controls the electric heating device to raise the temperature of the heat exchanger when the fuel-air mixture falls below a given temperature. A second thermostat senses the temperature of the heat exchanger and prevents the temperature from exceeding a level at which a user's skin will blister if the exchanger is touched accidentally. In cold operating environments, the heat exchanger assembly raises the temperature of the air above the dew point, thus effectively lowering the relative humidity.

Abstract: A thermo-magnetic vaporizer carburetor comprised of a vaporization reaction chamber which includes South pole exposed magnetic means uniformly around the chamber. The South pole magnetic field alters the molecular structure of the fuel so that it is more rapidly dispersed in the fuel/air mixture entering the I.C. engine. The liquid fuel enters the thermo-magnetic vaporizer under high pressure at ambient temperature and is conducted into a circular spiral arrangement of tubing of approximately six turns where the change-of-state transition is made from a liquid fuel to a fuel vapor. The circular spiral tubing assembly of the vaporization reaction chamber is the conduit for the fuel, as well as an electrical heating element that vaporizes the fuel that is flowing through it. The vaporized fuel exits vaporization reaction chamber and is directed to the exit port of the central vane gimbal where it is injected into the low pressure point of the spinning intake air vortex.

Abstract: The present invention includes an apparatus adapted to heat actuating fluid in a rail passage located within an engine. The rail passage is connected to an fluid inlet of at least one fuel injector. The apparatus includes a heating device located within the rail passage. The heating device is adapted to heat the actuating fluid, in response to a control signal. The apparatus also includes a temperature sensing device located within the rail passage. The temperature sensing device is adapted to sense a temperature of the actuating fluid and responsively generate a temperature signal. In the preferred embodiment, the apparatus also includes an electronic controller adapted to receive the temperature signal, determine a temperature of the fluid, and responsively generate the control signal and deliver an injection command signal to the fuel injector.