A method for controlling an internal combustion engine of a vehicle having a continuously variable transmission is disclosed. When a driven pulley speed is less than a predetermined driven pulley speed and an actual engine speed is less than an engine speed causing a driving pulley speed to be a driving pulley engagement speed: controlling the engine to increase the actual engine speed to increase the driving pulley speed to be at least the driving pulley engagement speed. When the driven pulley speed is above the predetermined driven pulley speed, the actual engine speed is greater than the engine speed causing the driving pulley speed to be the driving pulley engagement speed, and the desired engine speed is less than the engine speed causing the driving pulley speed to be the driving pulley engagement speed: controlling the engine to operate under conditions corresponding to an engine braking speed.

A throttle grip device includes: an interlocking member capable of rotating with an rotational operation of a throttle grip; a rotation angle detecting unit capable of detecting a rotation angle of the throttle grip by detecting a rotation angle of the interlocking member; and a return spring configured by a torsion coil spring which has one end locked to the interlocking member and urges the throttle grip and the interlocking member in a rotation direction toward initial positions when the throttle grip is rotationally operated. An engine can be controlled according to the rotation angle of the throttle grip detected by the rotation angle detecting unit, and the throttle grip device comprises a holding member which rotatably holds the interlocking member while positioning the interlocking member and holds the other end of the return spring while locking the other end of the return spring.

Methods and systems are provided for boosted engine systems. In one example, a system may include a pressurized air induction system with two pathways, the first for delivering ambient and the second for delivering boosted air to the engine. The pressurized air induction system is also adapted to store boosted air for faster supply of boost pressure in the event of demand for greater engine torque.

Disclosed is a throttle quadrant arrangement utilizing a throttle lever mechanically connected to three Rotary Variable Differential Transformers (RVDTs). The signals from the RVDTs are monitored by a process where the processing component. More specifically, RVDT outputs are monitored by the engine control system to determine if they are outside a predetermined range of operability. If an RVDT is not operable, the engine control system establishes a thrust output using the signal from one of the functional two. If only one or none are within the range, the system moves on to a default mode.

Disclosed is a throttle quadrant arrangement utilizing a single throttle lever. The single lever is independently mechanically connected to three Rotary Variable Differential Transformers (RVDTs). Failure points are engineered into the design such that when one of the mechanical jams, the mechanical connection to the other two RVDTs will not be compromised.

An angle detection mechanism to detect a rotation angle of a rotation body includes a first detection unit to cause a first output value to constantly change in response to an angle change of the rotation body in the entire region of a specific rotation range and to set a change quantity of the first output value relative to the angle change in a first rotation region of the specific rotation range to be greater than a change quantity in a non-first rotation region, and a second detection unit to cause a second output value to constantly change in response to an angle change and to set a change quantity of the second output value in a second rotation region including a rotation region different from the first rotation region to be greater than a change quantity in a non-second rotation region.

A vehicle control device includes a user-depressible portion that in some examples takes the form of a third foot pedal. The user-depressible portion may be depressed to varying degrees and then released to varying degrees. The degree and type of pedal movement is analyzed to determine one of a predetermined plurality of vehicle control functions that the drives wishes to perform.

A control that can be a throttle control of a handle-bared vehicle is presented. According to some embodiments, a control can include a plurality of circuit boards, each of the circuit boards including a transmission coil, sensor coils, and control circuitry the drives the transmission coil and receives signals from the sensor coils; and one or more targets mounted on a shaft and configured to rotate over the sensor coils of the plurality of circuit boards as the shaft is rotated, wherein the plurality of circuit boards are mounted around the shaft, and wherein the position of the target is determined by the control circuitry as the shaft is rotated.

Disclosed is a verification system including a throttle actuation verification system. The verification system may include one or more sensors positioned at a location that will receive a force applied by an operator when a throttle lever is engaged or loaded for the intention to be actuated by the operator. A signal from the sensor is compared to a throttle position.

The present disclosure relates to a carburetor assembly (7) comprising a control unit (17), an air channel (8), a throttle valve (9), a choke valve (10), a pulsed fuel valve (11), and a fuel supply line (12). The control unit (17) is adapted to control the fuel valve (11) to supply fuel in accordance with a certain start setting, where the choke valve (10) can be open or closed. The carburetor assembly (7) comprises a rotation angle detector assembly (20) with a choke detector part (29) that is mounted to a choke shaft (30) that is connected to the choke valve (10) such that the choke detector part (29) is arranged to rotate together with the choke valve (10). The rotation angle detector assembly (20) further comprises a choke sensor device (23, 33) that is connected to the control unit (17) and can be affected by the choke detector part (29) such that the choke sensor device (23, 33) provides different output signals to the control unit (17) in dependence of whether the choke valve (10) is open or closed.