The major distinction between diesel and gas lies in the type of ignition. While gas engines operate on spark ignition, diesel engines employ compression ignition for igniting the fuel. With compression, the air is drawn into the engine and subjected to high compression that heats it up. The result is a very high temperature in the engine, much high than that of gas engines. In diesel engines, air and fuel are both infused into the engine at different stages, as … » Read More

Diesel engines offer the lowest specific fuel usage of any other large internal combustion engine. The fact remains, two-stroke diesels with high pressure forced induction, particularly turbo charging, make up a large percentage of the largest diesel engines. Throughout North America, diesel engines are generally used in larger trucks, where the low stress, high efficiency cycle will lead to a much longer engine life and lower costs to operate. These advantages also help to make the diesel engine ideal for … » Read More

If you’ve owned a diesel powered vehicle in the past or if you own one now, you no doubt appreciate the qualities this engine provides you with. More torque, better fuel economy, and easier maintenance are but a few of the attributes of owning diesel powered vehicles. However, there are some motorists that still complain about the engine’s weak power, especially when accelerating from a full stop. What you may not be aware of is the fact that a diesel … » Read More

Starting from late October, BMW will begin offering to North American buyers a suite of parts from its ‘Performance Accessories’ division for the X6 crossover. The range includes a power kit, styling package, unique alloys and a flat-bottomed steering wheel. The power kit will be available for xDrive35i and xDrive50i models built between 2008 and 2010. New engine software is claimed to increase engine output and responsiveness without increasing fuel consumption or exhaust emissions.

We’ve finally got some more artsy pics of the new Range Rover Evoque, which is set to be in a lot of peoples’ driveways come next summer. Oh, hey, there are specs, too. Just to get the pricing issue out of the way, Rover says it’ll start at £30,000 when it arrives in the UK next summer (foreign pricing to come at a later date). The “low carbon” front-wheel drive (or optional full-time four-wheel drive) Evoque is called a “cross-coupé”, … » Read More

When Peugeot took the covers off the all-new 508 in early July, it only offered a few photos of the sedan and station wagon models. Now, the French carmaker has issued a comprehensive gallery as well as detailed specs on the engine range of the mid-size model that replaces two cars in Peugeot’s range, the 407 and 607, and will be marketed in Europe from the beginning of 2011.