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Hybrid Auto Engineering ~ the Car of the Future ๐Ÿš˜โ€ข๐Ÿš˜โ€ข๐Ÿš˜โ€ข๐Ÿš˜โ€ข๐Ÿš˜โ€ข๐Ÿš˜

September 1, 2013

๐Ÿš˜โ€ข Hybrid Engineering for the Car of the Future. Automakers have been trying to engineer a suspension that affords good handling while maintaining the comfort of a premium luxury sedan. The difficulty in achieving this result rests with Balancing Comfort and Handling. Comfort requires a soft, smooth suspension that absorb bumps effortlessly; Suspension Handling requires a level of stiffness providing for precise control with harsh turns, acceleration, and deceleration.

๐Ÿš˜โ€ข Engadget reports that ZF and Levant Power are now developing GenShock-technology to unite the vast gains of active suspension with modest power consumption, minimal complexity, and affordable cost.

๐Ÿš˜โ€ข Imagine that… a hybrid system to recover energy, by generating electric power from the spinning wheels, when applying the breaks, this we know.

๐Ÿš˜โ€ข GenShock-technology. However, this new technology is a new energy recovery system that Generates Power as one cruises in their vehicle, as every jounce & bump in the road delivers vertical motion that is captured by the "hybrid shock absorbers."

๐Ÿš˜โ€ข Hybrid-Wheels is where its at in my humble opinion. Today the Hybrid engineers are stuck into using the drive-chain in placing power into the wheels, then using the wheel motion, transverting that motion back into the drive-train, where the electric motors become generators pumping electric power into the LiON Battery Cells.

๐Ÿš˜โ€ข Lets take the concept One Big Step further; Let’s have all Four Wheel Hubs engineered with their own separate Electric Motors, Generator Motors, eliminating the Drive-Chain, the Transmission, and the Trans-Axil completely.

๐Ÿš˜โ€ข Transmission and the Trans-axil are the Largest Power Consumer, as they expend energy converting rotational-torque motion from a engine running at say 2000 RPM engine, generating a speed of about 60 MPH, turning the wheels to say 720 RPM. Think about it, the engine is rotating at say 2000 RPM this rotational energy is then converted to rotational energy at 720 RPM at an angle of 90ยฐ offset from that of the engine. This conversion in RPM and Direction consumes energy and expends heat; Meaning that only 30% of the engine’s power actually reaches the wheels.

๐Ÿš˜โ€ข The engineering magic will be the computer-servo electronics package, in delivering proportionate power to all four wheels that may be rotating at slightly differing RPMs (see The Math). Remember when one’s car is turning left or right, the wheels on the outside of the car’s turning-circle will be rotating at a higher RPM than the inside wheels would be rotating. Also when breaking, or accelerating, one or more wheels may be tracking on slick pavement, oily, wet, or sandy conditions, making for potential over-rotation of the wheels in relationship to the other wheels and the road condition.

๐Ÿš˜โ€ข Audi unveiled its e-tron electric sports car with four motors, two on each axle, for a 0-to-60 mph time of 4.8 seconds or so. According to Audi, the automaker set out to develop a two seater that used electric power in mind throughout the vehicle from the heat plump to the drive system to the networking. Audi says.

๐Ÿš˜โ€ข The Math… The Question: How fast are the car’s wheels rotating (in RPM) when the car is traveling at 60 MPH. Lets attack the speed of the car first, by converting 60MPH to inches per minute. 1โƒฃ 60MPH equals 1 mile/minute; 2โƒฃ 1 mile/minute equals 5280 feet/minute; 3โƒฃ 5280 feet/minute equals 63,360 inches/minute.

๐Ÿš˜โ€ข Lets measure the outside edge of the car’s Wheel, its circumference. Say the wheel is 14" in Radius, meaning the distance from the center of the wheel-hub to the outside edge of the tire’s tread. 1โƒฃ If the radius is 14" then the Diameter is 2R, or 28". 2โƒฃ What is the number of inches of the outside edge of the tire all the way around. 3โƒฃ Basic math, the circumference is equal to Pi x D. 4โƒฃ In this case ฯ€ (Pi) equals 3.1428, D=28" 5โƒฃ The Tire’s Circumference equals 88" rounded up a tiny bit, 28×3.1428.

๐Ÿš˜โ€ข If the Car is traveling at 63,360 inches per minute (60MPH) then the Tires have to be rotating the same speed (number of inches per minute). Therefore 63,360/88 equals 720 RPM, revolutions per minute… Therefore if the Car is traveling at 60MPH then the car’s Wheels are rotating at 720 RPM for 28" diameter wheels.

(http://www.physicsforums.com/showthread.php?t=228382)


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