IN THE WORLD OF MOTORS
The column materials were prepared by Mikhail GZOVSKIY, Alexey VOROBYEV-OBUKHOV
This all-terrain vehicle, introduced on the North American market since 1990, is essentially a “luxury” version of the well-known Chevrolet Blazer. In the coming months, he will be replaced by a new “Bravado”, which, according to the tradition of recent years, has been made larger than its predecessor. Having become almost 30 cm longer and 10 cm higher and wider, Bravado demanded that the developers review the body structure: it remained frame, but now consists of not six, but eight sections. In addition, in the manufacture of spars, the hydroforming technology, now fashionable, was used, due to which the frame has fewer welds, and therefore it is much tougher. And this, in turn, reduces the level of vibration transmitted to the body.
The new Bravada, among the few American cars of this class, is equipped with complex multi-link suspensions. Especially interesting is the rear five-lever, in which, in addition, the ECAS system is installed. The familiar springs in it replace the rubber cushions connected to the compressor. The regular Bravada compressor will allow outdoor enthusiasts to pump up bicycle tires, balls, inflatable mattresses and boats - for this there are special nozzles in the kit. “Bravado” differs from “classmates” and “sharp” rack-and-pinion steering with variable power steering, which allows, moreover, to deploy on a smaller “patch”.
Well, and perhaps the most interesting: for the first time in twenty years, a six-cylinder in-line engine has been installed on a General Motors car. Called the “Vortek-4200, ” this motor, according to Ron Cosib, chief engine engineer at GM, provides the Bravado with high efficiency and environmental friendliness combined with power equal to or even greater than that of a typical American
V-shaped "eight". “Vortek-4200” also became the first-born in the application of variable valve timing here.