Patent ID: 8434444

Claim:
An automatic choke configured to be connected to an engine, the automatic choke comprising: a choke valve; a motor configured to be connected to the choke valve and to move the choke valve in response to a motor control signal; a temperature sensor configured to provide a temperature signal related to a temperature of the engine; and a controller electrically connected to the motor and to the temperature sensor and including an electronic circuit, the controller being configured to generate a first motor control signal that causes the motor to move the choke valve to a first position, determine a time period to hold the choke valve at the first position, the determination of the time period being based on a temperature value, the temperature value having a relation to the temperature signal, generate a second motor control signal to move the choke valve from the first position toward a second position, determine an engine revolution count to hold the choke valve at the second position, the determination of the engine revolution count being based on the temperature value, and generate a third motor control signal to move the choke valve toward a fully-open position.