A pedestrian warning system for an eco-friendly vehicle may include a warning sound controller including an alarm sound controller and a virtual engine sound system configured to inform a pedestrian of a behavior of the vehicle; and an alarm sound output device including not only an amplifier for amplifying a pedestrian alarm sound and a virtual engine sound, but also a directional speaker for outputting the amplified pedestrian alarm sound and the amplified virtual engine sound.

The various embodiments herein provide a reverse gear sensor and alert device for a vehicle comprising an electronic hub, a motor and a tail. The electronic hub comprises a control electronics circuitry (CEC), an audible buzzer, and an ultrasonic buzzer. The electronic hub is installed over a base frame attached to a rear body of the vehicle and is connected with a power source. The tail is attached to the electronic hub through the motor. The tail comprises a plurality of illumination members fixed on an outer surface of the tail and are powered through the motor. The power supply allows a flow of current to the motor on detecting a reverse gear activation in the vehicle. The current flow energizes the motor leading to a protrusion of the tail out of the vehicle. The plurality of illumination members, the audible buzzer, and the ultrasonic buzzer are activated on activation of the reverse gear.

A pneumatically insulating and acoustically permeable symposer device for a noise transmission duct of an internal combustion engine; the insulating symposer device comprises: an outer casing, which has an inlet opening and an outlet opening; an actuator plate, which is mounted so as to slide longitudinally; an emitter plate, which is mounted so as to slide longitudinally and is rigidly constrained to the actuator plate; an insulating element, which is arranged between the actuator plate and the emitter plate; and a communication duct with an adjusted cross section, which establishes a limited pneumatic communication between an inlet opening arranged upstream of the actuator plate and an intermediate chamber arranged downstream of the actuator plate, so that the inlet chamber and the intermediate chamber have the same static pressure but do not have the same dynamic pressure.

Aspects of the present invention relate to an active noise system, a controller for an active noise system, a method and a hybrid electric vehicle. The invention relates to use of an active noise system for providing noise when an ICE is not active.

A sound generation apparatus for an electrification vehicle and a method of use thereof are provided. In example embodiments, the sound generation apparatus receives driving information, determines a driving situation based on the driving information, designs an acceleration sound when the driving situation is determined as an acceleration situation, or designs a cornering sound when the driving situation is determined as a cornering situation, and plays and outputs the acceleration sound or the cornering sound.

A vehicle includes a three-axis accelerometer attached to a door and in communication with a processor. A speaker is in communication with the processor. Operation of the door toward a closed position is measured by the accelerometer to define a corresponding door acceleration. The processor determines a corresponding door-operating event based on the corresponding door acceleration and the speaker delivers a corresponding audio signal in response to the corresponding door-operating event.

The various embodiments herein provide a reverse gear sensor and alert device for a vehicle comprising an electronic hub, a motor and a tail. The electronic hub comprises a control electronics circuitry (CEC), an audible buzzer, and an ultrasonic buzzer. The electronic hub is installed over a base frame attached to a rear body of the vehicle and is connected with a power source. The tail is attached to the electronic hub through the motor. The tail comprises a plurality of illumination members fixed on an outer surface of the tail and are powered through the motor. The power supply allows a flow of current to the motor on detecting a reverse gear activation in the vehicle. The current flow energizes the motor leading to a protrusion of the tail out of the vehicle. The plurality of illumination members, the audible buzzer, and the ultrasonic buzzer are activated on activation of the reverse gear.

A vehicle includes a three-axis accelerometer attached to a door and in communication with a processor. A speaker is in communication with the processor. Operation of the door toward a closed position is measured by the accelerometer to define a corresponding door acceleration. The processor determines a corresponding door-operating event based on the corresponding door acceleration and the speaker delivers a corresponding audio signal in response to the corresponding door-operating event.

An apparatus including a drive shaft, a transmission, and a motor shaft. The drive shaft includes a drive gear and is configured to transmit power to a wheel of a vehicle. The transmission includes an input shaft, an output shaft, and an intermediate gear. The input shaft includes a transmission input gear and a plurality of input shaft gears. The output shaft includes a transmission output gear and a plurality of output shaft gears. The input shaft and the output shaft are aligned such that the input shaft gears mesh with the output shaft gears. The output shaft includes a first synchronizer configured to selectively engage an output shaft gear from the plurality of output shaft gears to adjust a ratio between an input shaft speed and an output shaft speed. The transmission output gear is operably coupled to the drive gear such that power is transmitted between the transmission output gear and the drive gear when the output shaft gear is engaged. The transmission input gear is operably coupled to an engine shaft such that a rotation speed of the input shaft is dependent on a rotation speed of the engine shaft when the first synchronizer is being shifted. The motor shaft is configured to be coupled to a motor. The motor shaft has a first motor gear and a second motor gear. The first motor gear is operably coupled to the drive gear and the second motor gear is operably coupled to the intermediate gear. The motor shaft includes a second synchronizer configured to selectively engage the first motor gear and the second motor gear. The first motor gear is configured to transmit power between the motor shaft and the drive shaft when the second synchronizer engages the first motor gear. The intermediate gear is configured to transmit power between the motor shaft and the engine shaft when the second synchronizer engages the second motor gear.

A vehicle proximity notification apparatus has first and second loudspeakers which output warning sound notifying proximity of a vehicle to an outside, and an adjusting unit. The adjusting unit adjusts the sound output from the first loudspeaker so that a sound collecting signal, which is obtained when the second loudspeaker collects the sound output from the first loudspeaker, coincides with a reference signal, in a state in which the first loudspeaker functions as a sound outputting element and the second loudspeaker functions as a sound collecting element. In addition, the adjusting unit adjusts the sound output from the second loudspeaker so that a sound collecting signal, which is obtained when the first loudspeaker collects the sound output from the second loudspeaker, coincides with a reference signal, in a state in which the second loudspeaker functions as a sound outputting element and the first loudspeaker functions as the sound collecting element.