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The race was between the blue cars from Molsheim and the red ones from Modena. When the start flag dropped it was Rene Dreyfus in his red Maserati who led into St. Devote, only to be passed by 'Williams' on the hill to the Casino, but his lead was short-lived as the Brit was sidelined by a broken valve spring, and his race was over.
On the 11th lap Surtees retired with a broken valve spring, Hill with an oil leak, and ninth-placed Collomb with engine failure. Bonnier seemed to be in a secure second place, but Salvadori in the Lola gave chase and managed to pass.
Too much oil pressure can create unnecessary work for the engine and even add air into the system. To ensure that the oil pressure does not exceed the rated maximum, once pressure exceeds a preset limit a spring-loaded pressure relief valve dumps excess pressure either to the suction side of the pump, or directly back to the oil pan or tank.
Pneumatic valve springs are also found in several Moto GP motorcycle engines, debuting in 2002 with the Aprilia RS Cube. In 2005, Team Roberts was the first to use pneumatic valves full-time in their uncompetitive KTM powered bike.
Driving the new Ilmor Chevy Indy V-8, He led 170 of the first 177 laps, giving up the lead only during pit stop sequences. He had such a big lead that he backed off, but the reduced revs created a harmonic imbalance in the engine. A valve spring broke with only 23 laps to go, [66] [67] [68] and the car coasted to a stop. It was considered one ...
Stiffer valve springs can help prevent valve float and valve bounce but at the expense of increased friction losses, higher stresses, and more rapid wear in the valvetrain. Various techniques have been used to offset the effect of stiffer springs, such as dual-spring and progressive-sprung valves, roller-tipped tappets, and pneumatic valve ...
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A spring is a device ... and the flow of oil in/out of the spring that can be controlled by valve thereby controlling stiffness. ... get broken or rearranged, and a ...