Interview with Markus Lienkamp
"There is no Alternative to Electromobility"
Electromobility is coming! In this interview, Prof. Markus Lienkamp, former VW manager and current head of the Department of Automotive Engineering at the Technical University of Munich, explains why e-fuels and hydrogen are no alternative and how new market players are doing.
next-mobility: A survey conduced by the management consultancy firm KPMG at the beginning of the year revealed that almost one in three of the 229 car bosses surveyed worldwide predicts the end of electric vehicles. Where does the contradiction between this anonymous survey and the public announcements and actions of OEMs come from?
Markus Lienkamp: One thing is clear: there is still some resistance in companies and some may secretly still have doubts about electromobility. I am therefore not particularly surprised by the results of this anonymous survey. Nevertheless, all OEMs worldwide are investing billions in electromobility. No company invests such sums if it does not believe that e-mobility will play a decisive role in the future. However, due to the CO2 limit of 95 g/km that will come into force in 2021, manufacturers have no other option than to produce a certain number of electric cars, if massive fines are to be avoided. Another driver is China, the world's most important automotive market. There, the state demands electromobility.
"There is no technological alternative."
next-mobility: Isn't electromobility in Europe just a solution demanded by politics?
Markus Lienkamp: Yes, at the moment it is a politically desired solution in Europe. Nevertheless, we need to differentiate: In China the technology is compulsory, in Europe it is not. Here, only the 95 gram limit applies. If the OEMs can meet this limit by other means, this is of course also permitted. But I don't see any technological alternative.
next-mobility: When it comes to lightweight construction in e-vehicles, there are also differing opinions. While Prof. Dudenhöffer analyses that lightweight construction in the electric car is losing importance, the former BMW developer Dr. Ulrich Schiefer contradicts and criticizes that this statement was not thought through to the end and was simply wrong. Who's right?
Markus Lienkamp: One thing is indisputable: The customer does not buy lightweight construction. He pays for certain properties in vehicles, such as range or acceleration. In this respect, we as technicians and engineers are fascinated by the subject of lightweight construction, but the customer, for the time being, doesn't care.
Markus Lienkamp: What I don't like is business people thinking that they could tell engineers that we no longer need lightweight construction. Only extremely expensive lightweight construction such as CFRP is losing importance. Overall, there is no tendency for the lightweight construction of electric cars to lose importance. The weight of the batteries must be compensated for, otherwise the driving dynamics would suffer immensely. We need about the same degree of lightweight construction as in vehicles with internal combustion engines. But not more either.
next-mobility: More and more new start-ups are entering the automotive market in the course of electromobility. Is Byton, for example, on the right track? And what about the Munich-based start-up Sono Motors?
Markus Lienkamp: I don't want to elaborate on Sono Motors. I don’t consider it as a serious project. Byton obviously has a budget of several billions available and can therefore put something neat on its wheels.
next-mobility: You develop new vehicle concepts. What is your approach?
Markus Lienkamp: The first approach we always take is: The result must pay off. We have therefore developed concepts for urban electric mobility, among other things. An example for this is the "Eva" project — an electric taxi specially designed to operate in tropical mega-cities. During my time at VW, I developed an electric postal van, which has now been realized by others. Apparently, this is also an economical solution. Electric mobility can already work — even in urban areas. Therefore, the first question to answer is: Which overall vehicle solution provides an economical solution?
next-mobility: On the topic of "electric mobility in urban areas": We recently received feedback from a next-mobility reader who wanted to buy an electric car for private use. To this end, he asked the responsible Senate employee whether a charging point in a lantern in front of his house could be approved. The answer was: He first had to buy the car and send an application form for the charging point. Only then, the authorities would examine whether a charging point was for the public benefit. Is bureaucracy, especially in urban areas, suffocating the fast implementation of electromobility in its infancy?
Markus Lienkamp: We Germans are masters in creating red tape (laughs). However, I still believe that the charging infrastructure is being considerably expanded thanks to the federal funding program (€ 350 million). The faster this proceeds, and the more charging points are made available, the smaller become the hurdles for customers to buy electric cars.
next-mobility: There is an increasing demand for politicians to invest more in the expansion of the charging stations instead of subsidizing the purchase of e-vehicles...
Markus Lienkamp: I would have preferred if higher sums had been invested in the infrastructure at an earlier time. Nevertheless, it was certainly not entirely wrong to subsidize a certain proportion of electric cars in order to help electromobility gain momentum.
"Hydrogen? By 2040 — But Only Maybe"
next-mobility: What about other drive concepts such as hydrogen or e-fuels?
Markus Lienkamp: Both hydrogen and e-fuels require five times as much energy as electric cars in terms of their CO2 balance. Why? Because the energy conversion chains are devastatingly bad. You can't seriously tell the customer that CO2 must be saved and then produce five times as much CO2 or use five times as much renewable energy. In the truck segment, we may be able to talk about hydrogen technology in 2040. But only after we have converted the entire energy supply in Europe in order to ensure CO2-free supply. Before that, we do not need to discuss hydrogen.
next-mobility: Daimler's recently presented hydrogen vehicle "F-Cell" will thus remain a prestige object for the foreseeable future?
Markus Lienkamp: The subsidies in this area are of course taken.
next-mobility: Which vehicle do you drive privately?
Markus Lienkamp: None (laughs). I'm riding a bike. But my next vehicle will certainly be an electric car. I will buy it when technically mature vehicles with the appropriate range and at reasonable cost are available — i.e. in two to three years.
next-mobility: Your minimum range?
Markus Lienkamp: A real range of 300 kilometres should suffice, but then under all conceivable circumstances. The NEDC range would thus be around 500 kilometres. This should cover a large part of the journeys arising.
About the person
Prof. Lienkamp (*1967) heads the Chair of Automotive Engineering at the Technical University of Munich (TUM) and is involved in the Tum-Create project in Singapore. After studying mechanical engineering at TU Darmstadt and Cornell University, he obtained his doctorate at TU Darmstadt (1995). After an international trainee program at Volkswagen and a stay at the former joint venture between Ford and Volkswagen in Portugal, he led the brake test department for commercial vehicle development in Wolfsburg. Later he was head of the "Electronics and Vehicle" Research Institute at Volkswagen AG Group Research. The focus was on driver assistance systems and vehicle concepts for electric mobility.
This article was first published by next-mobility
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