Why do most V8s have more torque


The legendary Scania V8 engine celebrates its 50th birthday in 2019!

A legend celebrates its birthday! The Scania V8 engine made its debut in 1969 and the Scania V-shaped engine has enjoyed an unrivaled reputation ever since. At 50, the Scania V8 is more popular and better than ever. He is undisputedly the "King of the Road"!

1969: First Scania V8 with 350 hp

At the end of the 1960s, Scania engineers stunned the commercial vehicle world with a 14-liter V8 diesel engine that, with its 350 hp, was so powerful that many could hardly believe it. Because in 1969, long-haul trucks were usually only able to generate 250 hp. Even then, Scania recognized the signs of the times. The V8 was the natural response to better roads and the increasing need for increased transport efficiency. Today Scania offers the Euro 6 V8 engines with 530 to 770 hp - and the V8 is more popular than ever.

In the past five decades, Scania has consistently developed the V8 engines and revised them several times. But the basic concept - eight cylinders in a V-shaped arrangement and an astonishing power output - has remained the same.

The modular design and basic structure have remained
Customers around the world were able to experience the robustness, fuel efficiency and power of Scania V8 engines generation after generation and year after year. Fifty years is like an eternity in engine development. It is therefore not surprising that today's Scania V8 only has the basic construction and the modular principle in common with the first V8 generation. The core, the engine block itself, is a good example of further development. The first 14.2-liter version of the V8 from 1969 weighed 334 kg. Thanks to improved materials and technologies, today's 16.4-liter version has the same weight as it was back then, although it is larger, almost twice as powerful and equipped with many state-of-the-art and sophisticated auxiliary systems.

Improved power delivery

The basic engine characteristics and the typical sound have almost remained the same. Not only has the power output increased over the years. Numerous aspects of performance development have also improved. The first V8 required 1,500 rpm to provide 1,245 Nm, while today's top model, the 770 hp engine, already delivers 3,700 Nm from 1,000 rpm - an astonishing increase. This points to the most noticeable difference between the V8 generations: fuel consumption.

Fuel consumption steadily decreased

Modern, low-speed, high-torque engines use only two-thirds of the amount of fuel required in the 1970s, although today they offer much higher average speeds and meet Euro 6 emissions standards. At that time, emissions control was more or less unknown. Euro 1 was only developed in 1990, and from 1993 the values ​​had to be adhered to. In 2019, the current emission standard is called Euro 6d (valid from September 2019) and in the not too distant future we will be faced with a Euro 7 regulation. When Euro 1 was introduced, they were NOx -Values ​​of 8.0 are permitted. Today the limit is 0.46 - in practice Scania engines deliver even lower values ​​than the legal requirements prescribe.