Captiva VDCi motorized 2.0 liter diesel with common rail technology that is not spoiled, as the Captiva diesel SUV family that vigorous, responsive and smooth.
Physically, there is no significant difference with the gasoline version, except machinery and VCDi Emblem in front of the door. Engine used is the new generation with a combination of diesel common rail technology, direct injection, variable turbine geometry. The result is engine power can produce maximum 150hp/4000rpm and torsi 320Nm/2000rpm. As a benchmark Captiva 2.4 liter gasoline (144ps/220Nm), Ford Everest 2.5 liter (110ps/27.3kgm) and Toyota Fortuner 2.5 liter (102 ps / 26.5kgm). In the Fortuner, torsi peak can be more in the first 1600rpm.
FA Suwadji Wirjono, After Sales Director PT GMAWI said, kurva torsi peak diesel Captiva stretch between 2000-3200rpm. "So, drivers get torsi on top and on the wide range of engine cycles that are often used," he said after the launch of this model in South Jakarta, on Wednesday (16 / 4).
Kurva torsi this excess is so modern diesel engine. Unlike gasoline, where the peak torsi only lap at one point only, in the modern diesel rentangnya wider so that the car feels more responsive and nippy, even in the lower rounds.
This diesel engine using common rail technology with a second-generation pressure 1600bar. This is far from that usually diesel 200psi. This means that diesel flowed through the common rail tekannya increased up to 1600 times or 1600bar pressure atmosphere.
With the pressure of the expected fuel injector that disemprotkan into fuel in the form of a very fine / fog (holes injektor size 0.02mm) so that the perfect combustion occurs. According to Bosch, the supplier site in the common-rail system-Captiva this technology to create more clean diesel engine emisinya, more economical, more forceful and not noisy.
Fuel supply system that will not result in the ignition when it is not perfect combination with the oxygen supply system is also mumpuni. Captiva using turbo diesel with variable turbine geometry features.
Known as the turbo is to increase the concentration of oxygen into the fuel space. Increased oxygen needs of the high-round machine, "Imagine, in the lap machine 6000rpm, one combustion cycle takes only 0:02 seconds. And it must be perfect, from the steps hisap, compression, expansion, and dispose of," said Suwadji again. "To be perfect, the only way the air is forced in," he added.
In the regular turbo, kompressor lap linier are appropriate amount of pressure to play a waste of gas turbine blade. So when the high pressure gas, lap kompressor also high, so vice versa. In the variable turbine turbo, turbine blade angle changed so that the gas pressure can dispose of the same play strip kompressor faster again. "Analoginya screen as the boat. The bigger the screen, the faster perahunya," said Suwadji.
The size of the turbine blade angle is the electronic control module, the brain system car, depending on the speed and load the car. So can the high-speed, high lap machine, blade is closed because it was passing down the road with only one passenger only. Instead, the load weight, angle turbine blade can be opened wide as closely as possible to utilize the waste gas that is to play kompressor before going to get a perfect burn extra energy.
Harmonization of the supply of fuel and combustion air produces perfect. Engine more forceful, more responsive and soot emissions is pressed. Effects of vibration in order to muffle engine noise and diesel GM engines balancer install and dual mass flywheel.
Back issue of fuel, this sophisticated system ideally get fuel that has low sulfur contents. Because of the high sulfur contents, such as solar, often causing clogged injector.
Injector clogged causing the ignition and the engine is not perfect so lame. The use of regular diesel engines also reduce performance in other words the peak energy and torsi akan lower than normal conditions. Similarly, with emissions that disemburkan. This is because the uterus higher sulfur and cetane number (the calories are the fuel) is lower.
GMAWI, the guarantee Captiva Diesel ok with only local solar. This is based on the experience of using the Chevrolet Colorado pickup diesel in Indonesia since May 2007. Colorado has a diesel engine with the same technology, just more capacity, 2.5 liter. Colorado has been in trials with various types of diesel fuel throughout the country. GMAWI own just to test captive diesel about 5000km from the target 50000km. Based on experience with the Colorado, the diesel engine does not have a problem means.
But as a step antisipatif, GMWI prepare a special action. Every 15000km akan injector cleaned of the remaining combustion. Cleared by using ultrasonic waves. Then, in a special test on the equipment to find out whether the quality of the spray is to meet the standard. Fuel filter is also replaced every 15.000 km. While the tank will be cleaned every 30.000 km. "It's not improvement, but antisipatif step.
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