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Valeo

Valeo

France

Corporate Member

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Valeo is an automotive supplier, partner to all automakers worldwide. As a technology company, Valeo proposes innovative products and systems that contribute to the reduction of CO2 emissions and to the development of intuitive driving. In 2020, the Group generated sales of 16.4 billion euros and invested 12% of its original equipment sales in Research and Development. At December 31, 2020, Valeo had 187 plants, 20 research centers, 43 development centers and 15 distribution platforms, and employed 110,300 people in 33 countries worldwide. Valeo is listed on the Paris Stock Exchange.


Mobility Revolutions

We have entered a new era. The challenges of rapid urbanization across the world coupled with environmental issues are creating new forms of mobility. New technologies are providing solutions that are reshaping our cities, our lifestyles and the way we travel. Always a pioneer and tech leader, the automotive supplier Valeo has been able to anticipate the changes redefining the auto world. The Group develops innovative systems and technologies designed to reduce CO2 emissions and develop autonomous, connected mobility that is widely affordable and closely matched to individual needs. At the center of the automotive industry's revolutions, Valeo has fundamentally transformed its product portfolio to strengthen its leadership position in electrification and advanced driver assistance systems (ADAS}, two segments that are expected to grow rapidly over the next few years.


Vehicle Electrification

By 2030, hybrid and electric cars are expected to account for one-third of global automotive production as demand for combustion engines declines. A pioneer and world leader in the field of vehicles electrification, Valeo already equips one out every three cars in the world with electrical systems that reduce CO2 emissions. Its innovative technologies cover all types of motorization - from low voltage and light hybridization to high voltage full-electric.


Autonomous Vehicle

While half of the planet live in cities and the world's population continues to grow, urban densification creates any challenges, notably in terms of the mobility of goods and people. Autonomous driving will help alleviate traffic and increase safety by reducing the risk of collision. The automotive supplier Valeo is world-leader in producing sensors that enable vehicles to understand their environment. The Group is also preparing for new uses, with the autonomous and connected vehicle becoming a platform of services more than just a mere means of transport.


Digital mobility

Digitalization and hyper-connectivity are disrupting usage and reinventing mobility. A pioneer in the sector, Valeo is committed to anticipating the needs of tomorrow, be it autonomous driving, the development of community-based models (carpooling, car sharing, chauffeur­driven transport) or smart cities and their "always in the move" citizens. The Group's mission? Create technologies and systems that serve people's needs.

Mr. Geoffrey Bouquot

Mr. Geoffrey Bouquot

Group CTO & VP Strategy

Representative

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16 July 2021

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See FISITA Library items from Valeo

FWC2023-PPE-024

Dipl.-Ing. Christophe Mollier, Product Design leader, Valeo

Detail

As a gearbox supplier for EV’s, Valeo has defined an innovative methodology to design internal devices that brings additional functionalities. Passenger cars are often equipped with a park lock system as a back up to the parking brake (hand brake) to face regulations or to enhance safety and anti-theft needs. For a long time, park locks were present only on automatic transmissions and were mechanically controlled from the gear lever with a cable. With the electrification revolution, it is now common to have a "by wire" control of the park lock. Electrical control allows new concepts of actuation: When the usual cable driven park lock of an automatic transmission would only deliver a few degrees of angle (typically around 20°), it is now possible with an electric rotational actuator to do much more. Advantages like stability, tolerances and actuation time have led to a 180° actuation angle park lock. It will be described and compared with the historical 20°. One of the main items to be addressed on a park lock system is the dynamical behavior (ratcheting). Ratcheting being the behavior of the park pawl bouncing from tooth to tooth on the park wheel when the vehicle speed is too high to allow the locking. The transition of vehicles to electric drivetrains has induced a migration of the park lock position from the gearbox output to the input. This drift has changed a lot the ratcheting of the park pawl as the rotation speed has been multiplied by the gear ratio (typically 10 to 15) and the torque divided by the same value. This study applies to electric drive vehicles, but could be also applied to fuel cell vehicles. An innovative design has been proposed thanks to this predictive simulation methodology. This innovative design can be easily implemented on any EV gearboxes for OEMs

FISITA World Congress 2023

Propulsion, power & energy efficiency

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Park Lock for eDrive gearboxes, how to design and simulate ?, FWC2023-PPE-024, FISITA World Congress 2023

FWC2023-PPE-009

Dipl.-Ing. Roel VERHOOG, R+I Manager, Valeo

Detail

Title: Efficient disconnect for electric drivetrains Car electrification era sees more and more four wheel drive (4WD) cars coming on the market as the customer wants more safety, fun to drive but also less range anxiety for less cost. Unfortunately, about 60% to 70% of the time the vehicle is in 4 x 2 mode and its rear axle will generate losses especially with a permanent magnet motor. As known, reducing transmission losses is key for the CO2 emissions (HEV) and the range quest (BEV). One way to do so is to disconnect as many rotating parts as possible in the gearbox and e-motor on the rear axle through a dedicated device. A disconnect device can save from 5% to 10% in transmission losses in low and high voltage applications. It will become the main trend for permanent magnet rear axles. In the first step, different concepts will be compared in terms of efficiency. In a second step the chosen concept will be improved for main functional performance but also for constraint functions as mass, volume, assembly and remanufacturing. Electromagnetic simulations with a dedicated software will be shown in detail as it is the main design driver for the actuator performance, opening and closing time. Electro-magnetic simulation tool was correlated with measurements on the first concept so as to get confidence for future studies. Magnetic field leakage, sensor location choice and safety have also to be considered. The disconnect can be operated at 0 km/h so clunk noise at the end stroke was taken into account through a piston impact force simulation. In addition to electro-magnetic and dynamical aspects, integration of a disconnect in a reducer; volume optimisation, reparability and CO2 have been taken into account. The study is centered on solenoids coaxial to the transmission shaft. It can be extended to a solenoid parallel to the shaft but it will not include other actuator concepts like motor+screw. This is the second generation of an existing concept. Design steps and optimisation methodology will be shown for the first time. New, improved disconnects are needed for the future HEV and BEV 4x4 applications to come. The Valeo coaxial solenoid disconnect has a lower mass and energy consumption than the first disconnect generation and takes into account today's CO2 constraints. Dipl ing Roel VERHOOG, Valeo Dipl ing Christophe MOLLIER, Valeo Dr Alexandre RENAULT, Valeo

FISITA World Congress 2023

Propulsion, power & energy efficiency

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Efficient disconnect for electric dirvetrains, FWC2023-PPE-009, FISITA World Congress 2023
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