A vehicle pedal emulator assembly comprising a housing and a sleeve both defining an interior cavity. The sleeve is adapted for sliding movement in the interior cavity of the housing. Respective first, second, third, and fourth springs located in opposed ends of the interior cavity of the housing are compressible in parallel in response to the sliding movement of the sleeve in the interior cavity of the housing. The first and second springs surround the shaft and extend between one end of the housing and one end of the shaft. The third and fourth springs extend between one end of the sleeve and the other end of the sleeve. The combination of an inductive sensor and a Hall Effect sensor are adapted for measurement of the position of the sleeve relative to the housing.

When another pump is actuated while a pump is de-actuated, a pressure adjustment valve is brought into a valve-opened state after a shut-off valve is actuated in a valve-opening direction and the another pump is actuated.

A pedal feel emulator comprises a housing extending along a center axis between a closed end and an opened end and defining a chamber extending therebetween. A first piston is slidably disposed in the chamber. The first piston defines a compartment in fluid communication with the chamber. A second piston is slidably disposed in the compartment. A spring seat extends radially outwardly from the second piston. A first elastic member is located in the chamber extending between the spring seat and the closed end. A second elastic member is located in the compartment and extending between the spring seat and the first piston. A third elastic member is located between the second piston and the first piston. A brake system including the pedal feel emulator is also disclosed herein.

A brake cylinder configured to provide braking signaling to an automotive simulator, the brake cylinder includes a damper housing, a resilient damper arranged within the damper housing and a piston configured to move a block in the axial direction at least partially into the damper housing towards said resilient damper. The block comprises a mechanical stop configured to limit the axial movement of the piston in the axial direction. The brake cylinder further has a sensor configured to measure a response to movement of said piston and send a signal to a processor indicative of that movement. The brake cylinder is configured to be connected to a brake pedal. The mechanical stop divides the braking process into two phases a first phase where the pedal can be depressed and a second phase where the pedal cannot be pressed further due to the mechanical stop. In one variant the brake cylinder is a purely mechanical system with only the damper housing or in combination with a single cylinder chamber. Alternatively, the described cylinder chamber is a slave chamber for use in a hydraulic brake cylinder also including a master chamber in fluid connection with the slave chamber via a channel.

A brake cylinder for use with an automotive simulator includes a brake cylinder housing having a master chamber, a slave chamber, a wall disposed therebetween and at least one channel configured to provide fluid communication between the master chamber and the slave chamber. In some variants, the at least one channel may be an opening configured to provide fluid communication between the master chamber and the slave chamber, in another variant the channel may be an external channel such as a tube. The brake cylinder also includes a master piston configured to pressurize fluid in the master chamber when a brake pedal is pressed. The brake cylinder further includes a slave piston and a pressure sensor disposed in fluid communication with the brake cylinder. The pressure sensor is configured to measure pressure in the chambers and send a signal to a processor indicative of movement of the brake pedal. When pressurizing fluid in the master chamber, the master piston is configured to drive fluid from the master chamber to the slave chamber via the at least one channel to increase pressure in the slave chamber.

A pedal simulator connected to a master cylinder to provide brake pedal response to a driver. The pedal simulator includes first and second reaction force members with an adjustable gap to change brake pedal feeling. A component of the pedal simulator includes a deformable portion that is used to adjust the gap to achieve a desired brake pedal response.

A stoke simulator operable by an operation of a brake operation member that is operated by a driver, including: a housing: a movable member held by the housing so as to be movable relative to the housing, the movable member being connected to the brake operation member; a volume change chamber disposed forward of the movable member in the housing; and a plurality of elastic members disposed in the volume change chamber and capable of generating an elastic force in accordance with a movement of the movable member, at least one of the plurality of elastic members being a rubber-like member.

A brake system includes a reservoir and a motor-driven master cylinder operable during a backup braking mode by actuation of an electric motor of the master cylinder to generate brake actuating pressure for hydraulically actuating the pair of front wheel brakes and the pair of rear wheel brakes. A power transmission unit is configured for selectively providing pressurized hydraulic fluid to a PTU output for actuating the pair of front wheel brakes and the pair of rear wheel brakes in a normal non-failure braking mode. First and second two-position three-way valves are each hydraulically connected with the master cylinder, the power transmission unit, and a selected pair of the front and rear wheel brakes. Each of the first and second three-way valves selectively controls hydraulic fluid flow from a chosen one of the master cylinder and the power transmission unit to the selected pair of front and rear wheel brakes.

A pedal simulation device, comprising: a housing; an abutment region that is coupled with the housing in a substantially rigid manner; a piston that is received in the housing and can be moved in a direction of actuation by passing through successive first and second actuation phases; and a return device that is configured to exert a resetting force on the piston that acts counter to the displacement of the piston in the direction of actuation.

A clutch pedal for an electrically operated clutch system simulates the pedal forces of a hydraulically actuated clutch. An operating element is pivotably supported on a mounting so as to move along an operating path between a non-operating position and an operating position. A restoring spring applies a force towards the non-operating position. At least one friction element rubs against a curved friction surface when the operating element is pivoting along the operating path. The friction element is spring-loaded against the friction surface. During operation between the operating position and the non-operating position, the friction element moves over a cam lobe of the friction surface. The friction element is elastically movable radially in relation to the curved friction surface.