Jun 26, 2013, 9:00 AM EDT
Renault were at the forefront of F1’s last turbo era, leading the way by introducing a 1.5-litre turbocharged engine in 1977 at a time when all the other teams were using normally-aspirated power units.
Within a few years F1 had tapped the enormous power of turbocharged engines and Renault won a string of races, although they failed to clinch a championship.
Turbo power was outlawed at the end of 1988 but will return to F1 next year. Renault’s director of testing and development Jean-Pierre Menrath, who worked on the original Renault turbos of 1977, explained how the technology has moved on since then:
“The major difference, of course, and the major technological development on the new engine, is in the electronics,” he said. “We started developing a turbocharged engine with distributors and igniters, which are no longer in use today. The fuel injection system had no electronics.”
“And in terms of design, the modern simulation tools didn’t exist back then, nor did all the computer systems and software used to design the engines more effectively and track their performance more accurately.
“There was no telemetry, no data acquisition. For the record, the driver could alter the booster pressure. Our “telltale” was a dial with a needle that was stuck pointing up. So, at the end of the day, the level of monitoring was somewhat limited.
“Nowadays, engine technology is a lot more effective. We’re very close to the complex systems used in aerospace.”
Towards the end of the development of the old turbo engines Renault saw some astronomical power outputs: “We went from 520/530bhp in 1979 to over 1,000bhp in the space of five years!”
“At the end of 1986, we even had a test engine that was capable of developing up to 1,200bhp thanks to the use of new turbochargers, with a new design. At the outset, they were intended to be used at altitude and in the end, at sea level, they produced exceptional performances. Unfortunately, the engine only lasted three laps!”
Renault anticipate next year’s engine, dubbed F1 Energy, will produce around 600bhp with a further 160bhp coming from the electrical energy recovery systems.
Apr 26, 2015, 10:00 PM EDT
Watch the pair of Indy Lights races from Barber at midnight ET.
Apr 26, 2015, 8:49 PM EDT
It was Ron Capps’ Day in Baytown, Texas.
Apr 26, 2015, 8:24 PM EDT
Newgarden rolls out the thank you mat after scoring his elusive first IndyCar victory.
Apr 26, 2015, 8:08 PM EDT
Ryan Hunter-Reay not satisfied with first top-five finish of 2015.
Apr 26, 2015, 7:42 PM EDT
Penske pair still 1-2 after tough afternoon in Barber.
Apr 26, 2015, 7:10 PM EDT
Graham Rahal comes up short in best performance in a year.
Apr 26, 2015, 5:37 PM EDT
Newgarden scores first career win at Barber.
Apr 26, 2015, 4:43 PM EDT
We’re halfway at Barber, with Graham Rahal the leader at Lap 45 and pit stops underway.
Apr 26, 2015, 2:30 PM EDT
Meeke becomes the first British driver to win in the WRC in 13 years.
Apr 26, 2015, 2:29 PM EDT
Results from the Indy Lights’ series second race at Barber Motorsports Park
Apr 26, 2015, 2:00 PM EDT
Watch the fourth round of the IndyCar season, from Barber Motorsports Park, at 3 p.m. ET on NBCSN and NBC Sports Live Extra.
Apr 26, 2015, 1:15 PM EDT
Lotus youngster beats Nyck de Vries in a truncated second race of the Formula Renault 3.5 season.
Apr 26, 2015, 12:30 PM EDT
What to watch for ahead of Round 4 of the Verizon IndyCar Series season, the Honda Indy Grand Prix of Alabama at Barber Motorsports Park.
Apr 26, 2015, 12:00 PM EDT
Marquez undergoes minor surgery on his left hand, and is in doubt for next weekend’s Spanish Grand Prix at Jerez.
Apr 26, 2015, 10:40 AM EDT
Mick wins the third and final race of the first ADAC F4 weekend of the year at Oschersleben in Germany.
Apr 26, 2015, 9:30 AM EDT
45 delegates from the FIA had been attending the first Asia-Pacific Sport Regional Congress in Kathmandu, Nepal, on Saturday.
Apr 26, 2015, 8:30 AM EDT
The Coca-Cola signage isn’t limited to Scott Dixon’s car this weekend.
Apr 25, 2015, 7:11 PM EDT
Second in qualifying a good day at the office for Will Power, as he’s in search of his first win of the year.
Apr 25, 2015, 6:42 PM EDT
Davey Hamilton will have a one-off day back behind the wheel of a current day IndyCar, filling in for Townsend Bell at next week’s IndyCar open test at the Indianapolis Motor Speedway.
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