Provided is an engine knocking detection apparatus capable of reasonably implementing necessary measures for water and dust proofing and against breaking of a cable, and the like at low cost as well as precisely detecting and effectively suppressing or avoiding knocking while suppressing cost and weight increases as much as possible. The engine knocking detection apparatus is adapted to detect knocking in an engine that adopts a flywheel magneto ignition system with an ignition coil unit securely attached to a cylinder, the ignition coil unit including an iron core, a coil wound around the iron core, and a control circuit board attached to the coil, and has an accelerometer for knocking detection attached to the iron core of the ignition coil unit.

Provided is an engine knocking detection apparatus capable of reasonably implementing necessary measures for water and dust proofing and against breaking of a cable, and the like at low cost as well as precisely detecting and effectively suppressing or avoiding knocking while suppressing cost and weight increases as much as possible. The engine knocking detection apparatus is adapted to detect knocking in an engine that adopts a flywheel magneto ignition system with an ignition coil unit securely attached to a cylinder, the ignition coil unit including an iron core, a coil wound around the iron core, and a control circuit board attached to the coil, and has an accelerometer for knocking detection attached to the iron core of the ignition coil unit.

A carbon monoxide detection, warning, and mitigation assembly for a vehicle includes a control module, a plurality of bulbs, and a plurality of sensors. The control module is configured to couple to a vehicle and is operationally couplable to an electronic controller of the vehicle. The bulbs and the sensors are configured to couple to an interior surface of the vehicle and are operationally coupled to the control module. The sensors are configured to measure a carbon monoxide level in a passenger compartment of the vehicle and to communicate the carbon monoxide level to the control module. The control module is positioned to compel the bulbs to illuminate and the audio system to emit an audible alert to notify the occupants, and to lower the windows of the vehicle to ventilate the passenger compartment. The control module also is configured to compel the electronic controller to turn off the ignition.

An ignition control apparatus of the present embodiment controls operation of an ignition plug provided so as to ignite an air-fuel mixed gas. The ignition control apparatus is characterized in that the ignition control apparatus includes: an ignition coil provided with a primary winding which allows a current to pass as a primary current therethrough and a second winding connected to the ignition coil, an increase and a decrease in the primary current generating a secondary current passing through the secondary winding; a DC power supply provided with a non-ground side output terminal, the non-ground side output terminal being connected to one end of the primary winding so that the primary current is made to pass through the primary winding; a first switching element configured of a semiconductor switching element provided with a first control terminal, a first power side terminal, and a first ground side terminal, the semiconductor switching element controlling on and off states of current supply between the first power side terminal and the first ground side terminal based on a first control signal inputted to the first control terminal, the first power side terminal being connected to the other end side of the primary winding, the first ground side terminal being connected to a ground side; a second switching element configured of a semiconductor switching element provided with a second control terminal, a second power side terminal, and a second ground side terminal, the semiconductor switching element controlling on and off states of current supply between the second power side terminal and the second ground side terminal based on a second control signal inputted to the second control terminal, the second ground side terminal being connected to the other end side of the primary winding; a third switching element configured of a semiconductor switching element provided with a third control terminal, a third power side terminal, and a third ground side terminal, the semiconductor switching element controlling on and off states of current supply between the third power side terminal and the third ground side terminal based on a third control signal inputted to the third control terminal, the third power side terminal being connected to the second power side terminal of the second switching element, the third ground side terminal being connected to the ground side; and an energy accumulation coil configured of an inductor, the inductor being interposed in a power line connecting the non-ground side output terminal of the DC power supply and the third power side terminal of the third switching element, the energy accumulation coil accumulating energy ther

Methods and systems are provided for addressing spark plug soot fouling. In one example, a method may include alternating one or more combustion events with spark timing advanced with one or more combustion events with nominal spark timing. The approach allows spark plug over-heating, and related issues such as knock, to be reduced.

The ignition apparatus includes: an ignition plug; a plurality of high voltage devices each configured to generate the high voltage and apply the high voltage between the first electrode and the second electrode; a leakage current detection device configured to detect a leakage current flowing between the first electrode and the second electrode; and a control device configured to control respective operations of the plurality of high voltage devices and the leakage current detection device. When the control device determines that leakage is present between the first electrode and the second electrode based on the leakage current detected by the leakage current detection device, the control device causes each of the plurality of high voltage devices to apply the high voltage between the first electrode and the second electrode at the same period.

A method for preventing back fire of an engine by a device for preventing back fire of an engine, may include monitoring operating information of the engine; determining whether the back fire occurs by using the operating information of the engine; and controlling an ignition timing to be retarded when the back fire occurs as the determination result.

The present disclosure refers to a method for detecting an exchange of a component of an ignition system of a spark-ignited internal combustion engine. The method comprises the step of determining at least one parameter being indicative of an operation or condition of the ignition system; and the step of detecting an exchange of the component based on a comparison of the parameter with at least one reference value.

The present disclosure refers to a method for detecting an exchange of a component of an ignition system of a spark-ignited internal combustion engine. The method comprises the step of determining at least one parameter being indicative of an operation or condition of the ignition system; and the step of detecting an exchange of the component based on a comparison of the parameter with at least one reference value.

A failure diagnosis device for an ignition circuit, comprising: an ignition plug; an ignition coil; a capacitor series connection including a high side capacitor and a low side capacitor; a switching-element series connection including a high side switching element and a low side switching element; an inter-terminal voltage detection unit for detecting an inter-terminal voltage of the capacitor series connection; an intermediate voltage detection unit for detecting an intermediate voltage at the connection point of the high side capacitor and the low side capacitor; and a determination unit for determining a failure location of the ignition circuit based on at least one of the inter-terminal voltage and the intermediate voltage.