Tag: Rimac C_Two

  • Rimac shows how electric cars are tested for electromagnetic emissions with C_Two hypercar

    The Rimac C_Two electric hypercar is undergoing homologation ahead of a planned start of deliveries in 2021. Part of that process involves testing for electromagnetic emissions, the Croatian company explained in a short video.

    All electronics—including those used in cars—produce some amount of electromagnetic emissions. Those emissions can also interfere with electronics.

    That means if a car’s emissions are too high, traffic lights, speed cameras, and cell communications could be disrupted, while if a car’s onboard systems aren’t properly shielded, outside emissions could interfere with things like air conditioning or the radio.

    To prevent either issue, the European Union requires electromagnetic-emissions testing in order for cars to be homologated for sale, Rimac said, adding that electric cars produce a much higher level of emissions than internal-combustion vehicles. That’s to be expected, as electric motors are a major potential source of electromagnetic emissions.

    Rimac C_Two electromagnetic-emissions testing

    Rimac C_Two electromagnetic-emissions testing

    Under the ECE R10 testing standard, cars are placed in a semi-anechoic chamber, which is sealed off from outside electromagnetic emissions to ensure accurate test results. Cars are then driven at specific speeds on a dynamometer, while subjected to radiation of between 20 MHz and 20 GHz.

    With the radiation bombardment underway, accessories like air conditioning, lights, and windshield wipers are turned on to ensure they work properly. In the case of the C_Two, different drive modes needed to be tested as well.

    Once the initial test is completed, Rimac completely disassembles its prototype cars, makes any necessary tweaks, reassembles the cars, and runs the test again. It’s all part of the process of putting a new car on sale—even a 1,914-horsepower electric hypercar with a very limited production run.

    When it unveiled the C_Two in concept form at the 2018 Geneva International Motor Show, Rimac said it would build just 150 cars. Rimac views itself more as a tech firm than a maker of cars, and has since attracted investments from Hyundai and Porsche that will likely see its technology incorporated into their cars.

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  • Watch the Rimac C_Two undergo crash testing

    The Rimac C_Two may be a low-volume electric hypercar, but it still needs to be crash tested like any other production vehicle. Rimac on Friday released a video showing two prototypes being sacrificed for the cause ahead of the C_Two’s targeted 2021 launch.

    Rimac began crash testing in 2019, and did simulation work prior to that. The crashes shown here—both frontal offsets—represent the second round of testing. Cars were run into a barrier at a 40% offset at 40 kph (24.8 mph) and 56 kph (34.7 mph).

    To complete testing and regulatory homologation, Rimac plans to build 13 prototypes and five “pre-series” cars. Of these 18 cars, 11 will be destroyed in crash tests, Rimac said in a press release accompanying the video. These cars will be built on a new assembly line Rimac unveiled in June.

    Rimac C_Two production line

    Rimac C_Two production line

    Unveiled in concept form at the 2018 Geneva International Motor Show, the production-spec version of the C_Two was originally scheduled to debut at this year’s Geneva show, and start production before the end of the year. Due to the coronavirus pandemic, the show was canceled, and the start of C_Two production was pushed back to 2021.

    Rimac quotes output of 1,914 horsepower and 1,696 pound-feet of torque, with a 0-60 mph time of 1.85 seconds (with a one-foot rollout), and a top speed of 258 mph. The car will also feature sophisticated driver-assist tech that will act as a driving coach on racetracks.

    Despite a price tag of $2 million, most of the C_Two’s 150 build slots were filled almost immediately after the concept car’s 2018 unveiling. Rimac’s technology may also make it into cars from Hyundai and Porsche—both of which own stakes in the firm. A September report also claimed Rimac could buy Bugatti in exchange for Porsche increasing its stake.

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