Abstract: A capacitive discharge ignition system in which a controllable switch is positioned between a storage capacitor and the primary winding of an ignition transformer. The switch is controlled to create a train of pulses to the primary winding timed to reinforce the ringing action of the ignition transformer.

Abstract: In order to protect a rotating portion of an intermediate link lever support pin, an intake air control apparatus provided with main and sub throttle valves is structured such that a wire bracket (6) supporting valve opening and closing wires (Wa, Wb) is screwed to an outer end surface (1a) at a throttle drum side of a throttle body (1), an intermediate link lever support pin (23) is provided toward the throttle body (1) side on an inner end surface (6d) facing to the throttle body (1) of the wire bracket (6), an intermediate link lever (20) rotatably borne to the intermediate link lever support pin (23) is arranged at the throttle body (1) side from the inner end surface (6d), and a rotating portion (R) of the intermediate link lever support pin (23) and the intermediate link lever (20) is arranged to face to the inner end surface (6d).

Abstract: A process is provided for ignition control in a cylinder of an internal combustion engine, using an ignition coil which has a connected primary winding and a secondary winding which is connected to a spark plug, and an ignition control unit which is used to control circuit logic connecting the primary winding by means of a line. According to the process, at the beginning of a working cycle, a switching signal is transmitted from the ignition control unit to the circuit logic, marking the beginning of the working cycle, and the temporal length of the signal is used as a reference length (idle time) for other digital information transmitted to the circuit logic by the ignition control unit.

Abstract: An internal combustion engine having a compression ignition initiation device is provided. The compression ignition initiation device includes a body defining a chamber and an outlet from the chamber. The device further includes means, within the chamber, for generating a combustion initiating shock front from the outlet. A method is provided, including compressing a mixture of fuel and air in an internal combustion engine cylinder to a point less than a compression ignition threshold, and initiating ignition of the mixture by subjecting it to a shock front.

Abstract: A system for an engine, comprising of a cylinder of the engine; a first injector configured to inject a first substance to said cylinder; a second injector configured to inject a second substance to said cylinder; and a controller configured to commence combustion in the engine by injecting fuel into said cylinder, where said fuel is injected by only one of said first and second injectors during said start and/or warm-up.

Abstract: An internal combustion engine is provided that basically comprises a combustion chamber, an electric discharge unit and a controller. The combustion chamber receives a mixture of fuel and air that is caused to undergo compression self ignition. The electric discharge unit is provided inside the combustion chamber to generate an electric discharge for conducting combustion inside the combustion chamber. The controller is configured to control a voltage applied to the electric discharge unit. The controller is configured to control the electric discharge unit such that a non-thermal plasma can be formed without incurring a transition to arc discharging, and to control the quantity and distribution of an activated air-fuel mixture inside the combustion chamber in accordance with an operating condition of the internal combustion engine.

Abstract: A method for operating an internal combustion engine in controlled self-ignition, a fuel-air mixture being introduced into a combustion chamber at least partially in a gas-exchange cycle, and being compressed in a compression stroke, the load range usable for the Otto engine self-ignition is broadened in that, in the fuel-air mixture, during the gas-exchange cycle, a flame front is generated at one or a plurality of places by spark ignition, which compresses and/or heats up the remaining fuel-air mixture, and converts the latter thereby at least partially to intermediate combustion products.

Abstract: An electrically controlled throttle apparatus comprises a throttle valve for controlling an amount of intake air to be supplied to an internal combustion engine; a throttle body which houses the throttle valve; a motor for driving the throttle valve; and a throttle sensor for detecting an opening degree of the throttle valve. The throttle sensor is a magnetic resistance element for detecting a change in direction of a magnetic field. The direction of the measured magnetic field of the throttle sensor when the throttle valve is in an opening learning reference position used as a criterion by the throttle sensor is the same as a direction of a leakage magnetic field of from the motor.

Abstract: A method and system for providing pilot fuel for a pilot ignition system of an internal combustion engine having one or more cylinders and having a lubrication system. A portion of the lubricating oil is diverted from the lubricating system. During the pilot ignition phase of the engine combustion cycle, the diverted lubricating oil is injected into the one or more cylinders.

Abstract: An air-fuel ratio controlling apparatus includes an internal pressure detector for detecting an internal pressure of a combustion chamber of the engine. The apparatus estimates a motoring pressure of the engine and determines a start-of-combustion time, a time point when a difference between the internal pressure and the motoring pressure exceeds a predetermined value in a compression stroke and a combustion stroke of the engine. Firing delay for each cylinder is calculated from as a duration from sparking to the start-of-combustion time. Air-fuel ratio of each cylinder is estimated based on the firing delay and fuel injection amount for each cylinder is calculated to make the air-fuel ratio of plural cylinders uniform.

Abstract: An internal combustion engine has a plurality of cylinders having combustion chambers and each being associated with a spark plug designed for igniting a mixture of air and fuel in the combustion chamber, and at least two adjusting devices for adjusting the air supply to the combustion chambers of the different cylinders. To control the internal combustion engine, an individual ignition angle is detected for each group of cylinders to which the same air mass per working cycle is respectively supplied and during the respective working cycles of which the same loss torque is decisive. The decisive loss torque is the one associated with the cylinder that is in its intake cycle during the respective working cycle of the respective cylinder of the respective group. The individual ignition angle for each group is detected as a function of the decisive loss torque for the respective group.

Abstract: To optimize an accelerator pump while maintaining serviceability of a carburetor. A drive lever includes an operating portion that slides in abutment along a cam projection formed on a cam and a transmitting portion for transmitting a swinging force in an increased magnitude by being provided in the vicinity of a spindle as a lever swing axis in comparison with the operating portion. A driven lever includes a receiving portion being capable of a swinging motion together with the drive lever about the spindle and receiving the swinging force by being in abutment with the transmitting portion and a connecting portion connected to an accelerator pump as a control unit thereof for controlling the flow amount of fuel are provided and the transmitting portion includes a screw mechanism for adjusting the angle formed between the drive lever and the driven lever and a cylindrical cover for covering the screw mechanism.

Abstract: A correction system and method for an electronic throttle control includes a generator module that generates a learned-correction value corresponding to a first air-learn index. The learned-correction value is used to compensate a throttle position. A correction module writes to a throttle position correction array with the learned-correction value when an air-learn value equals a predetermined stability threshold.

Abstract: A fuel-injection system including a fuel injector, having a plurality of spray-discharge orifices, which meters fuel into a combustion chamber of an internal combustion engine, has an ignition device, which projects into the combustion chamber, this ignition device having at least one first pole and one second pole. The fuel jets emerging from the spray-discharge orifices spread an essentially cone-shaped fuel fan below the region of the ignition device. The end of the at least one first pole is arranged to the side adjacent to the end of the second pole projecting into the combustion chamber, and both ends are located on approximately the same level of the longitudinal axis of the ignition device.

Abstract: In a method for operating a spark-ignition internal combustion engine with direct fuel injection in the post-start phase at low temperatures, fuel is supplied to the combustion air in a pilot injection (MH) of a first fuel quantity during an intake stroke of the internal combustion engine such that the pilot injection (MH) forms a homogeneous, lean air/fuel mixture (?>1) in substantially the entire combustion chamber, and a main injection (MS) of a second fuel quantity is subsequently injected into the combustion chamber during a compression stroke directly before the ignition time (ZT), said main injection (MS) forming in the region of the spark plug a stratified, rich air/fuel mixture (?<1), which is then ignited by the spark plug.

Abstract: A combustion mode switching control system for diesel engines is provided. The system includes: a switch determination module that initiates a switch request to switch between at least one of a premixed compression ignition (PCI) mode and a diesel combustion mode based on engine speed and at least one of fuel quantity and torque; a transition module that commands the at least one of the PCI mode and the diesel combustion mode based on the switch request; and a control module that controls at least one of target airflow, desired fuel quantity, and desired fuel injection timing based on the command.

Abstract: A method and an apparatus detect an erroneous connection between a plurality of ignition devices and a fuel injection control device. A first time interval is measured from an input of an ignition signal for a certain cylinder to an input of the next ignition signal and a second time interval from an input of the next ignition signal to an input of a further next ignition signal. An erroneous connection is determined by comparing a relationship between the first time interval and the second time interval with a previously stored normal relationship between the first time interval and the second time interval that are correctly connected in accordance with a predetermined procedure. The erroneous connection is outputted and displayed to a predetermined erroneous connection display device if it is determined that the erroneous connection exists.

Abstract: A governor system is provided for limiting a degree of throttle travel of a throttle as a function of rotational speed of a drive axle. The governor system includes a governor shaft rotatably supported by the drive axle and operably interconnected to internal components of the drive axle for varying a feedback torque, a governor arm fixed for rotation with the governor shaft, a throttle cable interconnected with the governor arm for applying a first pulling force to the throttle and an accelerator cable resiliently interconnected with the governor arm to apply a second pulling force to the governor arm. The second pulling force induces rotation of the governor arm for applying a torque on the governor shaft. The torque balances with the feedback torque of the governor shaft for limiting the second pulling force as a function of the rotational speed of the drive axle.

Abstract: An ignition circuit is for an internal combustion engine in a handheld portable work apparatus. A combustion chamber (4) is configured in the cylinder (3) of the engine (1) which is delimited by a piston (5) driving a crankshaft (7). A pole wheel (10) revolves with the crankshaft (7) and is assigned to an induction loop (13). The pole wheel periodically changes the magnetic flux in the induction loop. An ignition capacitor (16) is charged by a charge coil (14) of the induction loop and is discharged via a discharge circuit (15) via an ignition coil (17). The ignition coil is connected to a spark plug (19) projecting into the combustion chamber. For achieving a powerful ignition spark, the discharge of the ignition capacitor is prevented by an rpm evaluation circuit (23) when the rpm curve (30) exhibits an rpm change (?n) which exceeds a pregiven threshold value.

Abstract: A digital radio telephone comprises a radio portion for receiving a radio signal modulated by an encoded digital signal including control information, for demodulating and outputting the encoded digital signal, a control signal processing portion for decoding the demodulated encoded digital signal to obtain the control information, a telephone number information detecting means for detecting whether the decoded control information includes mate telephone number information, a memory for storing the telephone number information, a time information management means for specifying an incoming time of the telephone number information to output a time information, and a memory management means for recording the telephone number information corresponding to the time information into the memory.