| As of 2006, approximately half of all new car | | | | much more efficient. These cars can gain the |
| registrations in Europe were turbo diesel cars. The | | | | much-needed power, plus more without waste of |
| popularity of this type of car sprung out of the | | | | fuel. Fuel is burnt efficiently at an increased level |
| improvements it gives in fuel economy, noise | | | | to achieve optimum power. In diesel cars, the |
| reduction/elimination, vibration, and harshness. | | | | pressure that tends to increase the speed of the |
| Taking a closer look at the diesel engine you will | | | | engine controls the turbocharger - but this is |
| find out that it has lesser speed range of about | | | | dependent on the load. |
| 1,000 to 5,000 rpm for private cars. This makes it | | | | Additional load to the diesel engine would result to |
| ideal for turbo charging since the turbo will not | | | | greater resistance to the cylinders. Increased |
| exert much to change speed. Turbo lag is also | | | | combustion and high temperature beget increased |
| reduced and efficiency is much more improved in | | | | pressure and temperature on the exhaust gas. |
| a turbo diesel engine. | | | | This revs up the car at a faster speed compared |
| Since diesel engines need much compressed air to | | | | to a diesel car with less load ran on the same |
| achieve ignition, there is no need to fit in dump | | | | rpm. |
| valves, which could be an additional cost. Diesel | | | | Turbo diesel engines were used for light trucks in |
| cars do not have the throttle plates that close | | | | the 1990s in the United States. During that time, |
| down when the car decelerates from a boost. | | | | the diesel fuel had high sulphur content that |
| The main function of the dump valve for the | | | | caused a lot of problems with emissions. This was |
| petrol-driven car is to serve as the bypass | | | | the reason why a lot of sedans, station wagons, |
| gadget for the extra pressure that has built up | | | | and hatchbacks that have diesel engines did not |
| due to the closing of the throttle. This | | | | sell as much. |
| compressed air at very high temperature needs a | | | | In 2006, the ultra-low sulphur diesel came out in |
| way out else it will go back and eventually | | | | the market and manufacturers started to |
| damage the engine. | | | | produce turbo diesels that run on this new fuel, |
| Diesel cars have no use for the dump valve | | | | with much attention on lowering emissions. |
| because their engines are built to use | | | | Turbo charging would also depend on the car to |
| high-temperature compressed air. Performance is | | | | be modified. Take note that turbochargers |
| much better n a turbo diesel since there is hardly | | | | increase the speed of the engine, which means |
| any lag in the next boost. With a gas-run car, the | | | | there is increased temperature. The car to be |
| dump valve delays the next boost when gears | | | | fitted with a turbo diesel engine should be well |
| are shifted. | | | | equipped to withstand this heat. |
| In terms of fuel economy, turbo diesel cars are | | | | |