If I could still remember, when I was young, my dad used to have a diesel Pajero as a company car. And that's how the perception of diesel stuck with me for the rest of my life till last week. I used to think it's less-powered, dirty, noisy and it's only for trucks and lorries. Partly it was true because afterall, you do see many trucks and lorries using diesel and the emissions from their exhaust pipes are smoky black! Thus, I think I have an important mission today to bust some of the myths of diesel and diesel engines.
That's not true from my real experience with BMW diesel drive last week. The diesel powered vehicles are capable of outstanding performance. Today's diesel engines has the latest in turbocharger and fuel injection technology, which has placed diesels high on the performance scale. Turbochargers tend to improve power at high engine speeds.
Myth #3: Diesel are used for towing because of high torque and low horsepower.
Torque, is also called moment or moment in force. Just as a force is a push or a pull, a torque can be thought of as a twist or twisting force. For example, a small tape motor, the one you find in home audio systems has high RPM, low torque and a large pump motor has low RPM, high torque. And RPM (revolutions per minute) is a unit of frequency of rotation.
Myth #4: Diesel engines are loud.
I certainly have experienced this. Don't all trucks and lorries that run on diesel are noisy? This myth was true for the longest of years, but thanks to the innovation of a feature called "pilot injection," modern diesels have become extremely quiet. By introducing a small dose of fuel, just a few ten-thousandths of a second before the main shot of fuel, the combustion is hence "softer" and noise is reduced considerably. The BMW diesel engine powered car is decently quiet.
Myth #5: There must be smoke, if not no power!
This is the greatest myths of all times. I do see billowing black smoke from trucks and lorries and I was then clouded (pun intended) by the thought that diesel must emit black smoke so that it has power!
While older generations of diesel engines are well known for billowing diesel soot (the black smoke emitted from the exhaust pipes), new diesel engines utilize clean diesel technology, such as diesel particulate filters and exhaust gas recirculation systems, to greatly decrease the amount of polluting emissions. In fact, due to breakthroughs in clean diesel technology, diesel engines now emit less harmful greenhouses than a similar sized gasoline engine. And diesel fuel has a 10 percent higher energy content than gasoline and also provides additional lubrication to the engine.
There is a one-to-one relationship between greenhouse gas emissions and fuel efficiency. Because diesels are more efficient than conventional cars, they generate less carbon dioxide (about 20% less CO2 I was told) However, diesels emit larger amounts of two other pollutants which are:
- Particulate Matter: Diesel particulates are harmful to human health as well as aesthetically unpleasant.
- Oxides of Nitrogen: While less visible, is a key ingredient in the formation of urban smog, and also can contribute to the formation of acid rain.
Myth #6: It's hard to find diesel fuel/pumps.
Hahahha.... this is so not true. In all 900 Petronas stations nationwide, all of them are equipped with diesel pumps. It's much easier to pump diesel nowadays because the diesel pumps have a smaller pout than the petrol pumps so drivers would not have the pump-wrong-fuel problem again.
Petronas Dynamic Diesel is formulated with superior detergency to prevent injector fouling, excellent corrosion protection and good antifoaming quality, by delivering satisfactory engine performance for optimum power and improved fuel economy. For more info, please log on to their website on their Dynamic Diesel here.
Photo taken by Aaron