Bielle, female name. Part with two joints, one at each end, for the purpose of transmitting a force, a movement; in the internal combustion engines, the rods transform the rectilinear reciprocating movement of the pistons into a quasi-continuous rotational movement of the crankshaft. And at Renault, this is where, finally, the rub and the team suffers.
"In Bahrain, we broke a rod on the engine of Nico (Hulkenberg), said Cyril Abiteboul Thursday. I know, for a motorist, it's scary! This part is an essential element of the propulsion unit, a crucial factor in the operation of a single-seater and the transmission of the movement. To break a connecting rod is a storm, a hurricane, an earthquake. It can even be the end of the world if, as the expression says, this connecting rod flows and causes the engine to break.
"An unfortunate start to the season, not at the level of what we can accept"
So discovering this structural weakness in the V6 that was to bring the French team this season caused an earthquake on the side of the engine Viry-Chatillon. We better understand the defeat of the boss of the team tricolor evening of the race Sakhir. "We have since reduced engine power by 50%," says Abiteboul before reassuring detailing the Orsec plan set up after the painful discovery. We immediately worked on the solution. A new design of the connecting rod has been designed and a plan of manufacture designed. "
The new connecting rod arrived in Barcelona on a new engine, named A2, for the two Renault cars and the two McLarens. With instructions not to force: engine speed always halved. This weekend, however, the French manufacturer will allow the opening of the joysticks. Power recovery to 100% to find the extra 50 horses found this winter. "We worked like crazy for six weeks in Viry, welcomes Abiteboul, who also promises big changes for the chassis at the Grand Prix de France (June 23).