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CPC-KERS

What is CPC-KERS?AdvantagesOver HybridsOver Flybrids

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CPC-KERS

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    1. CPC-KERS Cambridge Passenger/Commercial Vehicle Kinetic Energy Recovery System

    2. What is CPC-KERS? Advantages Over Hybrids Over Flybrids & Other Alternatives Benefits Vehicle Manufacturing Commercial Environmental How it works Uniqueness Can you do it in-house yourself? Licensing & Partners Contents

    3. The Cambridge Passenger/Commercial Vehicle Kinetic Energy Recovery System is a patented mechanical regenerative braking system that fits between the driveshaft and road wheel of a car, truck or other wheeled vehicle. Very simple design – a simple differential gear system distributes torque between engine, flywheel, and road wheel- easy to manufacture with standard transmission components – much cheaper than any existing design. It is of similar complexity to existing hybrid power split devices (without the generators, motors & batteries). Retrofit on existing designs. Fits into the wheel hub – positioned and looking like a drum brake Very efficient – differential system transmits nearly 100% of vehicles kinetic energy to flywheel. Light & safe – flywheel needs only store enough kinetic energy for one acceleration cycle. What is CPC-KERS?

    4. The flywheel technology and storage in CPC-KERS and Torotrak designs are virtually identical - however Zytek, Flybrid, Torotrak and Xtrac all depend on a CVT This increases the cost of theirs system by a factor of two to three relative to CPC-KERS. Torotrak systems also have a significant weight penalty CVTs are not particularly efficient. mainly due to the oil pump. Also, the clamping forces required to prevent belt slip are very large. If the CVTs employs a torque converter this further reduces efficiency. Many CVTs are also restricted on torque. Belts are typically limited to <400Nm. CVTs are an order of magnitude less efficient than the non-friction differential solution in CPC-KERS Results are x2-x3 higher peak power output from CPC-KERS 50%-70% lower unit manufacturing cost of CPC-KERS x2-x3 Longer service life/higher reliability of CPC-KERS units Higher regenerative efficiency of CPC-KERS units Advantages over Torotrak designs e.g. Zytek, Flybrid, and Xtrac

    5. Hybrids require exotic and often imported materials for batteries and motors: Resulting issues include: Environmental impact of hybrid car battery, Raw materials shortage e.g. Dysprosium. CPC-KETS uses the same materials currently used in the vehicles differential gear with a steel or steel carbon fibre flywheel. Hybrids are relatively complex, heavy and costly limiting them to high end vehicles. CPC-KETS systems have a higher power density, lower unit cost (approx 30% of the unit cost) and are significantly less complex. Because of the electrical generation, electrical storage and electrical propulsion stages hybrids have significantly lower efficiency than the CPC-KETS which disposes of these stages. The CPC-KETS is of similar weight and efficiency to the planetary gear set in the Prius Power Split Device without the electric motor, generator and battery (but with a 5kg flywheel) Advantages over Hybrid

    6. The primary purpose is to recapture significant amounts of energy normally wasted during braking etc. (regenerative braking) This is a mechanism that reduces vehicle speed by converting some of its kinetic or gravitational potential energy into angular momentum and back. Storage is typically enough for one acceleration to cruising speed. The peak power of the vehicle can be significantly increased using the flywheel and high efficiency power transfer system, which is not dependent on electric motor sizes or fluid coupling limits. This results in a smaller gasoline or diesel engine sized more for average usage rather than peak power usage. The flywheel may be used in stop –start urban traffic so that the main motor does not have to run in heavy traffic. This depends on flywheel size. Vehicle Benefits

    7. Uses existing material and plant Very simple. Development cycle similar to normal transmission components. Retrofit – can be fitted to existing models to extend model life Manufacturing Benefits

    8. Stimulates new vehicle purchase during an economic downturn as fuel costs and cost of ownership reduced significantly by new CPC-KERS models Gives a decided USP and competitive advantage during recession. “Why buy a thirsty slow non-regenerative vehicle when the cheaper to run, more powerful CPC-KERS models available” No new vehicle development needed. Commercial Benefits

    9. Better fuel mileage. Lower ownership costs. Reduced carbon footprint owing to regeneration & smaller engines (in more powerful vehicles. Lower emissions especially in urban cycle. Fewer environmentally unfriendly imported exotic materials. No hard to recycle, poisonous waste products from batteries. Environmental Benefits

    10. How CPC-KERS Works

    11. Licensing is available to automobile manufacturers, OEMs and Tier 1 transmission makers. Three tiers of licensing are anticipated Green: One Primary partner. (currently sought – nominal fixed fee for unlimited internal license) Amber: Small number of Privileged Partners (reduced fixed percentage fee for minimum number of licenses) Red: Industry wide licensees (fixed percentage fee for larger number of licenses over longer period. CPC-KERS IP Licensing

    12. It would be very natural for in-house auto and transmission manufacturers to think “But we’ve got brilliant” multi-million dollar, award winning designers in–house so we don’t need to license – just to build our own parallel system.” However: In short the answer is – if they haven’t developed a near zero-loss low-cost regenerative braking system already then its unlikely and the lost time due to the attempt will probably cost you a large proportion of your sales over the next decades in much the same way that not having the four-stroke combustion cycle internal combustion engine or the radial tyre would affect your sales. Why? The need and advantages of regenerative braking has been recognised for at least 50 years. In that period no-one has developed a mechanical regenerative braking system without friction components - nothing as simple by a factor of two or three and efficient by at least an order of magnitude in terms of losses as the CPC-KERS. Uniqueness CPC-KERS Reproducibility

    13. CPC-KERS IP Licensing & Partners mark.baker@bhr-technology.com Contact

    14. BHR-Technology 3 Verney Junction Business Park, Milton Keynes MK18 2LB & Kings Parade, Cambridge

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