A fail safe device of an engine includes: a temperature setting module; a torque estimation module; and a torque monitoring module. The temperature setting module sets a value of a predetermined temperature parameter used in an estimation of a generation torque of the engine. The torque estimation module estimates the generation torque of the engine by using a set value of the predetermined temperature parameter set by the temperature setting module. The torque monitoring module decreases the generation torque of the engine, when the generation torque estimated by the torque estimation module is larger than a driver expected torque by a predetermined value or more.

Methods and systems for operating an engine that includes an electrically operated throttle are disclosed. In one example, mitigating actions are taken in response to degradation of the electrically operated throttle so that the engine may be operated in a way that allows a driver to reach a service area.

An excentric pin for an electronic throttle control assembly, which is used to adjust the default position of at least one spring used to control the position of a valve plate, where the valve plate is located in an opening of a housing in the electronic control assembly. The excentric pin is used to adjust the default angle of the valve plate to have an angular tolerance of +/0.10. The excentric pin is slideably pressed into an aperture of the housing of the electronic throttle control assembly, and turned using some type of driver. The electronic throttle control assembly may be a one-spring design, or a two-spring design, where the two-spring design requires only one spring pin and the excentric pin. Also, the excenter pin may be used to adjust the position of the sector gear, e.g., function as the lower mechanical stop to provide a minimum opening angle for low leakage, and a minimum opening angle to avoid throttle plate corking into opening of the housing.

An actuation system for a valve is disclosed. The actuation system comprises a housing having an end wall. A first piston and a second piston is slidably positioned within the housing. The second piston is positioned between the first piston and the end wall. A piston rod is coupled to the first piston and slidably extends through the second piston and the end wall. The piston rod is configured to be coupled with the valve. A first spring is arranged between the first piston and the second piston. Further, a second spring is arranged between the second piston and the end wall. The first spring and the second spring are configured to bias the valve to a closed position.

The invention relates to a double distributor for distributing the intake fluid of an internal combustion engine and controlling the temperature thereof, comprising a body (1) in which first and second channels for circulating said intake fluid are arranged, first (10) and second (20) shutters being positioned in said channels in order to distribute the flow passing through said channels, said distributor also including a motor (9) for actuating said shutters and kinematics simultaneously actuating the first and second shutters according to a movement law in response to an actuation of said motor, said kinematics comprising an inactive position in which said shutters are positioned when no force is supplied by said actuator motor, characterized in that said kinematics are configured such that said shutters can strictly follow said movement law when actuated by the motor from said inactive position without returning to said position.

A fail safe device of an engine includes: a temperature setting module; a torque estimation module; and a torque monitoring module. The temperature setting module sets a value of a predetermined temperature parameter used in an estimation of a generation torque of the engine. The torque estimation module estimates the generation torque of the engine by using a set value of the predetermined temperature parameter set by the temperature setting module. The torque monitoring module decreases the generation torque of the engine, when the generation torque estimated by the torque estimation module is larger than a driver expected torque by a predetermined value or more.

An ignition control system is applied to an internal combustion engine having an ignition coil, a switching element and a measurement detection part which detects at least one of a primary and a secondary voltages and a secondary current. The ignition coil has a primary coil and a secondary coil. The switching element performs conduction and interruption the primary current to the primary coil. The ignition control system has a primary current control unit generating a spark discharge at the ignition plug by passing the primary current through the primary coil, and perform interruption of the primary current, and a discharge short-circuiting determination part determining a generation of discharge short-circuiting based on a measured value. The primary current control unit generates the spark discharge again when discharge short-circuiting occurs.

A method of operating a vehicle having an engine, an engine control unit (ECU), a throttle operator, and a throttle body fluidly communicating with the engine. A throttle valve disposed in the throttle body regulates fluid flow to the engine. A throttle valve actuator is connected thereto for controlling a throttle valve position. A key receiver is configured to link to a key. The method includes linking a key to the key receiver and initiating engine operation. If the key is linked to the key receiver and engine operation has been initiated, an identification code of the key is read and an authorization status of the key is thereby determined. If the key is determined to be authorized, the throttle valve position is controlled based in part on a throttle operator position. If the key is determined to be unauthorized, the throttle valve position is limited to a security limit.

An excentric pin for an electronic throttle control assembly, which is used to adjust the default position of at least one spring used to control the position of a valve plate, where the valve plate is located in an opening of a housing in the electronic control assembly. The excentric pin is used to adjust the default angle of the valve plate to have an angular tolerance of +/0.10. The excentric pin is slideably pressed into an aperture of the housing of the electronic throttle control assembly, and turned using some type of driver. The electronic throttle control assembly may be a one-spring design, or a two-spring design, where the two-spring design requires only one spring pin and the excentric pin. Also, the excenter pin may be used to adjust the position of the sector gear, e.g., function as the lower mechanical stop to provide a minimum opening angle for low leakage, and a minimum opening angle to avoid throttle plate corking into opening of the housing.

Methods and systems for operating an engine that includes an electrically operated throttle are disclosed. In one example, mitigating actions are taken in response to degradation of the electrically operated throttle so that the engine may be operated in a way that allows a driver to reach a service area.