pas gros de torque: c vrai qu'il en manque, mais aumoins, il est à bas régimeEnvoyé par STONE_COLDPas gros de torque, c'est ça le problème des moteurs DOHC, VTEC, VVTI, etc...
GM to add new 2.8 litre V-6 to 2005 Cadillac CTS
Detroit, Michigan - GM has developed an all-new 2.8 litre V-6 VVT engine - the second variant in GM's new global V-6 engine family. The new 2.8, based on the 3.6 litre V-6 VVT that debuted in the 2004 Cadillac CTS, will serve as the new base engine in the 2005 CTS.
The global V-6 engine family is the first GM V-6 engine program to address what Thomas G. Stephens, group vice president, GM Powertrain, says is a vital initiative: to develop world-class engines with fully contemporary features - such as dual overhead cams and variable valve timing - but at a competitive cost structure that allows use of the engines in a global mix of vehicles.
The 2.8 litre global V-6 develops 210 hp at 6500 rpm and 194 lb.-ft. of torque at 3300 rpm, generating more base power than the standard engines in many comparable European luxury sport sedans, said the company. The adoption of fully variable valve timing for both intake and exhaust valves is a key element in the V-6 VVT control strategy and provides performance, fuel economy and reduced emissions.
"Flexibility was very important," said Tim Cyrus, global V-6 chief engineer. "We insisted on going after high performance and high refinement at the same time."