HP-CVT = High Power - Continuously Variable Transmission
Business Summary:
Primus Transmissions, LLC (Primus) has designed the “HP-CVT,” a new continuously variable transmission (CVT) that operates more efficiently, at lower cost and at higher power (torque) than existing automatic transmissions and other current CVTs.
As a result, the HP-CVT can save up to 25% fuel consumption in certain conditions on any kind of vehicle, while preserving power and drivability!
Primus Transmissions, LLC (Primus) has designed the “HP-CVT,” a new continuously variable transmission (CVT) that operates more efficiently, at lower cost and at higher power (torque) than existing automatic transmissions and other current CVTs.
As a result, the HP-CVT can save up to 25% fuel consumption in certain conditions on any kind of vehicle, while preserving power and drivability!
The HP-CVT is the worlds first real CVT working in a closed system.
What problems are we solving?
Automotive manufacturers must improve fuel efficiency and lower production costs (under “green” initiatives), while maintaining a positive user experience. They are now moving to 7/8 gear automatic transmissions, or CVT designs, to achieve these goals.
However, automatic transmissions are less efficient than CVTs, and current CVT designs are costly, too noisy, and are not dependable. The noise and lack of reliability often result from designs that rely on chains, pulleys, or friction systems. Current CVTs also cannot handle higher-power vehicles (e.g., large trucks and buses) and require additional gear modules and torque converters to work correctly.
Because the HP-CVT maintains an engine's RPMs (rotations per minute) at a constant optimal speed, it reduces oil consumption. And because the HP-CVT is a gear-based system (like current automatic transmissions), it solves the common complaints drivers have about current CVTs (e.g., “it sounds like a golf cart”).
This is important to the automotive market because car manufacturers increasingly use CVTs in their highly efficient models. Take a look at the product lines for Nissan, Toyota, and Honda (to name a few), and you can see this trend for yourself.
Automotive manufacturers must improve fuel efficiency and lower production costs (under “green” initiatives), while maintaining a positive user experience. They are now moving to 7/8 gear automatic transmissions, or CVT designs, to achieve these goals.
However, automatic transmissions are less efficient than CVTs, and current CVT designs are costly, too noisy, and are not dependable. The noise and lack of reliability often result from designs that rely on chains, pulleys, or friction systems. Current CVTs also cannot handle higher-power vehicles (e.g., large trucks and buses) and require additional gear modules and torque converters to work correctly.
Because the HP-CVT maintains an engine's RPMs (rotations per minute) at a constant optimal speed, it reduces oil consumption. And because the HP-CVT is a gear-based system (like current automatic transmissions), it solves the common complaints drivers have about current CVTs (e.g., “it sounds like a golf cart”).
This is important to the automotive market because car manufacturers increasingly use CVTs in their highly efficient models. Take a look at the product lines for Nissan, Toyota, and Honda (to name a few), and you can see this trend for yourself.
What is a CVT?
A continuously variable transmission (CVT) is a transmission that can change through an infinite number of effective gear ratios without “shifting” gears, such as with automatic and manual transmissions. A CVT changes seamlessly between maximum and minimum gear ratios (there is no set ratio), while other transmissions have only a fixed number of gear ratios. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities. This can provide better fuel economy than other transmissions by enabling the engine to run at its most efficient revolutions per minute (RPM) for a range of vehicle speeds. Alternatively, it can maximize a vehicle's performance by allowing the engine to run at the RPM at which it produces peak power. This is typically higher than the RPM that achieves peak efficiency. Nissan explains the function of a CVT in a clear way. You can find their movie on YouTube (search terms: Nissan CVT explained) |
What is our solution?
A continuously variable transmission (CVT) is a transmission that can change through an infinite number of effective gear ratios without “shifting” gears, such as with automatic and manual transmissions. A CVT changes seamlessly between maximum and minimum gear ratios (there is no set ratio), while other transmissions have only a fixed number of gear ratios. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities. This can provide better fuel economy than other transmissions by enabling the engine to run at its most efficient revolutions per minute (RPM) for a range of vehicle speeds. Alternatively, it can be used to maximize the performance of a vehicle by allowing the engine to run at the RPM at which it produces peak power. This is typically higher than the RPM that achieves peak efficiency. |
How does our HP-CVT works?
Advantages regarding the existing systems.
The HP-CVT is at least 10% more efficient than the Van Doorn’s/Bosch system (a commonly-used CVT design) because the lack of a hydraulic pressing system. |
• It’s suitable for (very) high-power engines, up to 10,000Nm and more…
• Ninety percent of the parts of the system move slowly • Because of its high efficiency, it can also replace any modern automatic transmission • The technology is unique in his kind • A ratio from 1/2 up to 2/1 in a single configuration. A ratio up to four in a double. This is unique for a CVT. • Has a granted patent in the US and pending in the EU • This HP-CVT is composed of some hydraulic systems and a more advanced planetary gear system. These technologies are well known and integrated in many applications, and it is therefore proven technology. • The HP-CVT has fewer parts than a modern automatic transmission; therefore, it is cheaper to fabricate, and it‘s smaller in size and lighter in weight. |
HP-CVT
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Automatic transmission
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Additional information
• The system is 100% unique and has been designed solely by the patent holder and founder of Primus Transmissions (Mr. Ivan Peeters)
• A patent has been granted in the US in 2016
• We have built an operating proof of concept model to test the design concepts
• The system is 100% unique and has been designed solely by the patent holder and founder of Primus Transmissions (Mr. Ivan Peeters)
• A patent has been granted in the US in 2016
• We have built an operating proof of concept model to test the design concepts
Engineering Scrutiny
We presented the HP-CVT design and working model to two professors who specialize in automotive transmissions and to the LMS Engineering specialists of Siemens.
(http://www.plm.automation.siemens.com/en_us/products/lms/engineering/index.shtml) to have their independent feedback.
LMS Engineering has done an initial review and confirms the viability of the working principles.
To confirm the claimed efficiency, gain as well as validate internal loads a simulation based study is recommended as a next step.
The professors have confirmed that the HP-CVT design appears to have the characteristics described above.
Contact information for each of them is listed below:
We presented the HP-CVT design and working model to two professors who specialize in automotive transmissions and to the LMS Engineering specialists of Siemens.
(http://www.plm.automation.siemens.com/en_us/products/lms/engineering/index.shtml) to have their independent feedback.
LMS Engineering has done an initial review and confirms the viability of the working principles.
To confirm the claimed efficiency, gain as well as validate internal loads a simulation based study is recommended as a next step.
The professors have confirmed that the HP-CVT design appears to have the characteristics described above.
Contact information for each of them is listed below:
1) Prof. Dr. Ir. Wim Desmet
Faculty of engineering Department of mechanical engineering Division PMA Celestijnenlaan 300B Box 2420 BE-3001 Heverlee Noise and Vibration Research Group Tel. +32 16 32 25 27 Fax: +32 16 32 29 87 |
2) Prof. Dr. Ir. Kurt Stockman
Campus Graaf Karel de Goedelaan Graaf Karel de Goedelaan 5 8500 Kortrijk T 056 24 12 11 F 056 24 12 24 |
3) Dirk De Vis M.Sc.Eng.
Vice President - LMS Engineering Siemens Industry Software NV Digital Factory Division Product Lifecycle Management Simulation & Test Solutions Interleuvenlaan 68 B-3001 Leuven (Belgium) Tel.: +32 16 384 200 Fax.: +32 16 384 350 |
Market:
The primary customers for the HP-CVT will be transmission manufacturers and automotive manufacturers. The vision is to use a prototype to demonstrate the design and then license the design to multiple customers. Based on publicly available market information about transmission design licensing, we conservatively estimate that annual license revenue could reach many millions of euros per year.
The primary customers for the HP-CVT will be transmission manufacturers and automotive manufacturers. The vision is to use a prototype to demonstrate the design and then license the design to multiple customers. Based on publicly available market information about transmission design licensing, we conservatively estimate that annual license revenue could reach many millions of euros per year.
POSSIBLE APPLICATIONS
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POTENTIAL CLIENTS
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