An internal combustion engine kart implementing an accelerator cable connecting an accelerator pedal and an operating lever rotating an air inlet flap controlling the amount of air entering the engine, and a controller receiving at least one control signal emitted by a remote transmitter. The kart includes a movable stop acting on the operating lever so as to change its range of movement and consequently a level of maximum opening of the air inlet flap. The movement of the movable stop depends on the control signal.

An engine kill switch and a throttle lever position sensor switch both remote from the engine and connected by a pair of wires to a microcontroller for controlling a spark initiated combustion of an air-fuel mixture in a cylinder of the engine. The switches may be received in the same housing and mounted in an operator handle housing of a hand held power tool.

Disclosed is a method for controlling combustion in an internal combustion engine including, on the one hand, an air inlet pipe provided with an air flow regulator in the pipe and, on the other hand, a single cylinder associated with the regulator, and including the following steps: determining the engine speed and/or load; and when the speed is below a predetermined value and/or the engine load is below a predetermined value, the air flow regulator in the inlet pipe is operated in such a way that the air flow is temporarily reduced during the engine cycle compared with the position that the butterfly-type throttle valve occupies during the other strokes of the engine cycle, while an intake valve that lets air from the inlet pipe into the corresponding cylinder is open.

A method for controlling the operation of a spark ignition internal combustion engine is described. The engine includes: a combustion chamber, an intake duct for placing the combustion chamber in communication with the external, a throttle valve arranged inside the intake duct, a carburetor for introducing fuel into the intake duct to form an air/fuel mixture to be intaken into the combustion chamber, and a spark plug arranged inside the combustion chamber to generate a spark for igniting the combustion of the air/fuel mixture. The method includes: monitoring the opening degree of the throttle valve; monitoring the speed of the engine, preventing the spark plug from generating the spark, if the opening degree of the throttle valve drops below a first opening degree threshold value and the speed of the engine is greater than a first engine speed threshold value.

An engine kill switch and a throttle lever position sensor switch both remote from the engine and connected by a pair of wires to a microcontroller for controlling a spark initiated combustion of an air-fuel mixture in a cylinder of the engine. The switches may be received in the same housing and mounted in an operator handle housing of a hand held power tool.

The invention relates generally to portable internal combustion engine powered devices. Public a small engine control combination switch comprising a knob assembly, a bracket and a choke cable, knob assembly includes a fixed plate, characterized in that the fixed plate with a rail; the bracket including a first hole. The choke cable connects with the rail through the first hole. The height of the rail is gradually increased, rail pivot drives the choke cable on the top of the track moves up and down; also further includes a fuel switch, a fixed plate is provided with a rotating shaft, the shaft connecting the fuel switch. The invention through the choke point of engine control, start-up, operation and shut down control, which simplifies the traditional steps of engines, generators and other equipment, greatly simplifying the operation process, improving the operation efficiency.

A throttle operating device that adjusts the opening degree of an engine throttle valve is provided. In a throttle operating device according to an aspect of the invention, one end of an inner cable inserted through an outer tube is fixed to a cable fixing part provided in a throttle lever, and the opening degree of the engine throttle valve is adjusted via the inner cable by rotationally operating the throttle lever. The one end of the inner cable is fixed to the cable fixing part with the extending direction of the inner cable changed within the throttle lever. Additionally, a moving mechanism that moves the cable fixing part along a longitudinal direction of the inner cable, is provided in the throttle lever.

An electronic governor system includes a motor, a transmission coupled to the motor, a throttle plate coupled to the transmission, the throttle plate movable to multiple positions between closed and wide-open, wherein power is supplied to the motor to move the throttle pate to a desired position and wherein power is not supplied to the motor to maintain the throttle plate in the desired position.

An electronic governor system includes a motor, a transmission coupled to the motor, a throttle plate coupled to the transmission, the throttle plate movable to multiple positions between closed and wide-open, wherein power is supplied to the motor to move the throttle pate to a desired position and wherein power is not supplied to the motor to maintain the throttle plate in the desired position.

The invention relates generally to portable internal combustion engine powered devices. Public a small engine control combination switch comprising a knob assembly, a bracket and a choke cable, knob assembly includes a fixed plate, characterized in that the fixed plate with a rail; the bracket including a first hole. The choke cable connects with the rail through the first hole. The height of the rail is gradually increased, rail pivot drives the choke cable on the top of the track moves up and down; also further includes a fuel switch, a fixed plate is provided with a rotating shaft, the shaft connecting the fuel switch. The invention through the choke point of engine control, start-up, operation and shut down control, which simplifies the traditional steps of engines, generators and other equipment, greatly simplifying the operation process, improving the operation efficiency.