An engine includes an engine stop switch for stopping the engine, and a cooling part included in a holding portion or passage of a cooling liquid. The engine stop switch is placed at the cooling part or at a peripheral part of the cooling part.

A throttle control system includes a throttle device and a controller that controls the throttle device. The controller executes a driving process of driving the electric motor such that a target angular position of the specific gear continues to increase beyond or decrease below the initial position. The controller executes a determination process of determining that wear has occurred in the gear mechanism based on that a non-rotation time in which the angular position detected by the rotation sensor does not change during execution of the drive process being greater than or equal to a predetermined specified time.

An emergency vehicle throttle management system includes a system controller having a main body, a processor, a memory, a multiplex connectivity component, a powertrain connectivity component, and a life safety connectivity component. The life safety connectivity component functioning to communicate directly with one of the life safety systems onboard the emergency vehicle. The powertrain connection component functioning to communicate with the powertrain components of the emergency vehicle which are mechanically coupled to the life safety system. The system controller including functionality for transmitting a powertrain resource request to the powertrain of the emergency vehicle in response to a throttle adjustment request received from the life safety system or a command from the throttle pedal of the vehicle. A throttle rule management unit evaluates error notifications received from the multiplex system, and selectively instructs the throttle source circuit to generate powertrain resource requests.

Methods and systems that monitor an actuator state of wear. One or more observations are made as to one or more extremum positions of the actuator to determine a reference extremum position when the actuator is not worn. As the actuator becomes worn, the difference between a present extremum position and the reference is used to monitor actuator wear. Actuator wear may be observed to identify or predict a need for maintenance or replacement, and/or may be used in determining health impacts of control system solutions.

An accelerator position detection device includes a handlebar grip that is turnable in a normal rotation direction and in a reverse rotation direction from a neutral position and is energized to the neutral position when no operation is applied; accelerator position sensors that output voltage according to an angle of the handlebar grip and that include a first sensor and a second sensor; and a detector that detects an angle for control for controlling a vehicle on the basis of the angle of the handlebar grip according to output from the accelerator position sensors. The detector detects an angle as a positive value on the basis of a first voltage when the first voltage in a rising range is output, and the detector detects an angle as a negative value on the basis of a second voltage when a first initial value not located in the rising range is output.

An emergency vehicle throttle management system includes a system controller having a main body, a processor, a memory, a multiplex connectivity component, a powertrain connectivity component, and a life safety connectivity component. The life safety connectivity component functioning to communicate directly with one of the life safety systems onboard the emergency vehicle. The powertrain connection component functioning to communicate with the powertrain components of the emergency vehicle which are mechanically coupled to the life safety system. The system controller including functionality for transmitting a powertrain resource request to the powertrain of the emergency vehicle in response to a throttle adjustment request received from the life safety system or a command from the throttle pedal of the vehicle. A throttle rule management unit evaluates error notifications received from the multiplex system, and selectively instructs the throttle source circuit to generate powertrain resource requests.

A rotation angle detection device that detects a rotation angle of a valve body. The rotation angle detection device includes a shaft, a gear, a magnetic field generator, and a magnetic detection element. The shaft is connected to the valve body. The magnetic field generator is arranged on a gear side and generates a magnetic field. The magnetic detection element is arranged on an extension of the shaft and detects magnetic flux density of the magnetic field that rotates together with the gear.

A control device may be configured to control an aperture of a throttle valve. The control device may include a pressure detector configured to detect a pressure in an intake pipe of a throttle; a flow rate detector configured to detect an amount of air flowing in the intake pipe; a current value detector configured to detect a current value of a throttle motor operating the throttle valve; a torque estimator configured to estimate torque of an engine based on the detected current value; a first aperture estimator configured to estimate the aperture of the throttle valve based on the detected pressure; a second aperture estimator configured to estimate the aperture of the throttle valve based on the detected amount of air; and a third aperture estimator configured to estimate the aperture of the throttle valve based on the estimated torque and a revolution speed of the engine.

A reset mechanism for an electronic throttle body comprising a valve, a throttle shaft, a reset gear, an upper spring seat, a lower spring seat, and a reset spring. A support leg is installed in the reset gear. The upper spring seat, the reset spring, and the lower spring seat are sleeved outside the reset gear. Two ends of the reset spring are fixed to the upper spring seat and the lower spring seat, respectively. The upper spring seat has an upper support leg surface attached to a first side of a valve limiting block and a side of the support leg. The lower spring seat has a lower support leg surface attached to a second side of the valve limiting block and another side of the support leg.

A throttle assembly for an engine may include a remote throttle lever, a sensor, and a terminal. The remote throttle lever may be coupled physically to a user input device and operable to be moved under control of the user input device. The sensor is configured to detect a position of the remote throttle lever and generate an output signal indicative of the position of the remote throttle lever. The terminal configured to provide the output signal to a controller of the engine.