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Mechanism for the recovery of energy in self-propelled vehiclesMechanism for the recovery of energy in self-propelled vehicles description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20090155107, Mechanism for the recovery of energy in self-propelled vehicles. Brief Patent Description - Full Patent Description - Patent Application Claims
1. Field of the Invention The object of the present specification is to set forth a novel system for the recovery of energy in self-propelled vehicles by means of a balanced rotary compressor with tangential pistons comprising two or more cylinders which are connected to a crank having two or more pins or a rotary compressor with tangential pistons, compromising an extendible crank. This novel system enables the recovery of wasted energy in motor vehicles in the form of pneumatic pressure for the possible use thereof in auxiliary systems belonging to the vehicle or in the engine. 2. Description of the Related Art Most of the energy currently produced by the engines in self-propelled vehicles is consumed in deceleration, especially in large cities, causing additional consumptions, as well as the necessary continuous braking systems. In addition to the drawback set forth, the main defect of rotary compressors with tangential pistons proposed to date is that the elements with internal shifting during the rotation of the assembly are not balanced, and their use at certain revolutions causes mechanical vibrations limiting their use and reducing the useful life thereof. The applicant, who is a person skilled in the art, is not aware of a balanced rotary compressor having the features of the compressor described below. This novel mechanism for the recovery of energy in self-propelled vehicles, based on either a balanced rotary compressor with tangential pistons comprising two or more cylinders and a crank having two or more pins, or a rotary compressor with tangential pistons comprising an extendible crank, is set forth to palliate, or where applicable, eliminate the drawbacks discussed above. In the balanced compressor with tangential pistons, the block rotates connected to the drive shaft through a clutch which is actuated upon applying the brake of the vehicle and the crank remains fixed to the structure or support. When the rotation starts, the grooved inner arm of the pivoted lever slides on the pin of the crank and makes it tilt on a shaft, this angular movement is transmitted to the outer arm of the lever, which by means of a connecting rod converts it into an alternative linear path to the piston of its cylinder. Therefore, each rotation of the block causes a complete cycle of the piston. The pistons of the cylinders are diametrically opposite and are actuated by pins of the shaft that are equally shifted 180°. In this way, the elements with inner shifting, such as pistons, connecting rods and pivoted levers, maintain at all times a 180° shift with its pair, achieving a homogeneous distribution of masses and balancing the assembly. This homogeneous and balanced distribution is also valid for compressors with an odd number of cylinders, although in this case the balancing is in its assembly, in this way, the pistons of each cylinder are operated by pins angularly shifted the same number of degrees as the cylinders (for example, in the cylinders located at 120° to each other, their pistons are actuated by pins also located at 120° to each other) therefore they maintain a uniform distribution of masses during the rotation, with a constant balancing. The crank and the inner part of the pivoted lever are located in a sealed central chamber and the outer part of this lever with the connecting rod and the piston in the other, separated by the rotating shaft of this pivoted lever. The necessary elements completing the compressor, the cylinder head and the cover of the check valves, inlet and outlet ducts, are located in the upper part of the cylinder. The compressed air outlet is sent to a suitable container through the front shaft of the compressor and a rotary joint. The rotation of the block also favors the dissipation of heat generated during the compression and together with the absence of vibrations, makes it especially suitable for the recovery of energy in self-propelled vehicles, connected to the drive shaft thereof by means of a clutch actuated upon applying the brake of the vehicle. On the other hand, the compressor comprising an extendible crank is formed by a block with two or more cylinders and a crank with a single extendible pin, to which the pistons are coupled by means of a pivoted lever and a connecting rod for each cylinder, the block rotates connected to the drive shaft of the vehicle and the crank remains fixed joined to the structure of the vehicle. The crank is formed by a cylinder joined to the fixing shaft and a rod with the pin, the shaft and the cylinder have an inner duct through which air or liquid flows under pressure, actuating the rod by extending it when the brake of the vehicle is applied. To complement the description being made and for the purpose of aiding to better understand the features of the invention a series of drawings is attached to the present specification as an integral part thereof in which the following has been shown with an illustrative and non-limiting character: Continue reading about Mechanism for the recovery of energy in self-propelled vehicles... 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