Browse Publications Technical Papers 2000-01-0668

Second Generation of High-Response V6 Engine Series (3.0 and 3.5 Liters) 2000-01-0668

Since the VQ engine series of lightweight, compact, low friction and high response engines was released in 1994, they have been rated highly both at home and abroad. Two new 3.0-liter and 3.5-liter V6 engines have been developed as the second generation of the VQ engine and introduced into the North American market. Continuing the characteristics of the first generation, this new VQ engine series achieves a performance figure of 98Nm/L as a result of adopting part shapes defined with a three-dimensional analysis method.
The new VQ30DE engine adopts a plastic intake manifold which incorporates a variable induction system with a rotary valve. The new VQ35DE engine adopts a continuously variable valve timing control system and a long branch intake manifold with an inertial induction system. It also incorporates a new concept piston and a hot coined connecting rod to reduce its reciprocating inertial mass. These features enable it to continue the advantages of the VQ engine such as lightweight, high response and excellent fuel economy despite the increased displacement. Consequently, the pin diameter of the crankshaft per liter has been reduced to one of the thinnest in use. High productivity has also been achieved, maintaining the rate of automatic assembly at 70% on a line for 2.0, 2.5, 3.0 and 3.5-liter engines due to the unification of parts and specifications.


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