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Liputan6.com, Jakarta: A medium-sized bright red bus that still looks sleekly displayed in the parking lot of the Office of Technology Assessment and Application Agency, is waiting for the Minister of State-Owned Enterprises (SOEs) Dahlan Iskan to ride it.
Dahlan Iskan, at that time, intend to feel the pleasure of boarding an electric bus previously enjoyed by the group of Minister of Research and Technology (Research and Technology) Gusti Mohammad Hatta and Minister of Transport E.E. Mangindaan at the launch of the National Technology Awakening Day (Hakteknas) 2012, Tuesday last week last month.
"Compared with diesel cars, this is no sound, from slow speed to high speed is very smooth," commented Deputy Minister of Energy and Mineral Resources (ESDM) Rudi Rubiandini after following the fun drive with Minister of Research and Technology at that time.
Red glowing bus named Hevina (Hybrid Electric Vehicle Indonesia) is not a regular bus run by diesel or gasoline, this bus is fully run with electricity from the lithium battery (LifeP04) that turns the electric motor driving the wheel.
The fundamental difference between electric cars and conventional cars lies in their propulsion systems that are 100 percent different in concept. If a conventional car uses the engine, then the electric car using an electric motor.
If the conventional car, in the engine burning process that caused a noise. But on electric cars, the motor uses electrical energy from the battery, so it does not cause sound.
Electric Buses made by the Center for Electricity and Mechatronics Research Institute of Indonesian Science Institute (LIPI) is able to bring 15-17 people with a maximum speed of 100 kilometers per hour and can walk as far as 150 km with a single 500 ampere battery charging.
The specs are using Brushless DC motor type, nomal votalge 320 VDC, peak power 147 HP / 110 KW, max motor RPM 5000, peak torque 300Nm, 280-380 VDC / 600 A controller, battery pack-lithium battery (lifePo4), 320 VDC / 160 A, charge input 220 VAC, output 20 VDC / 24 A.
Researchers who led the research for the electric bus LIPI Abdul Hapid admitted, the cost of making electric minibus prototype is fairly large, reaching about Rp 1.5 billion. Meanwhile, the price of minibus on the road market with fuel oil (BBM) is only about Rp 300 million to Rp 350 million per unit.
According to him, anywhere in the world electric cars are still expensive, but it looks cheaper because it gets subsidies from the government.He pointed out, in China the electric bus is subsidized to US $ 73 thousand per unit, while the electric car type sedan subsidized 8,800 US dollars. Similarly in the United States, where electric cars sedan class is subsidized 7,500 US dollars.
"Moreover, LIPI bus is still the price of research, if it is commercial alias mass produced the price is certainly not that big, must under Rp 1 billion and more competitive," he said.
"Plus this electric car improves many weaknesses of fuel cars because it is environmentally friendly, energy efficient and operating costs are cheap," he said.
Why environmentally friendly? According to him, because the electric bus does not release carbon dioxide from fossil fuel burning (zero emission). "And, means also do not wear exhaust," he said.
While energy efficient because if a conventional car uses diesel or gasoline subsidized for Rp 4,500 per liter while per liter is spent within 7-10 km, electric cars spend only Rp 2,000 for 2 kWh (without subsidies) spent within 10 km.
"The electric car also goes off on its own if it does not work, so if it stops at a red light, the energy is not used, because it's more efficient than 80 percent, while the conventional combustion efficiency is only 12-15 percent, especially in urban areas. jammed like Jakarta, "he said.
Electric cars, he explained, can also reduce operational costs 50 percent compared to conventional cars and lower maintenance costs to 70 percent.
"The maintenance of electric cars is almost non-existent, there is no radiator, no need to replace the battery, no need to change engine oil and filters," said Abdul Hapid.
He also said, the expensive electric car is more due to the price of batteries are still very expensive, ie 40 percent of the overall car price.
"This electric bus contains 100 lithium batteries each weighing five kg, so the weight of all 500 kg with a total price of more than Rp 400 million, more expensive than the price of electric motor," he said.
If the battery is weak, charging the battery can be done as well as charge the phone, but it takes four hours for the battery can be full again. Currently there is a special charger that charging time is enough 20 minutes."Charging can be done at night when PLN electricity is only used 20 percent by the community, so it will not interfere with installed capacity," he said.
If there is already a battery that is more efficient than lithium ion batteries are popular today, he said, the price of electric cars can be much cheaper than the current price.
Meanwhile, Minister of Research and Technology (Research and Technology), Gusti Muhammad Hatta stated proudly, LIPI-made electric buses that have been tested quite comfortable to be boarded and ready for use as a means of land transportation.
"We are with the relevant ministries and a number of business actors have been coordinating to prepare technological improvements, production facilities through regulation and healthy business competition mechanism so that the national electric bus can be produced in bulk and competitive," he said.
Gusti targets the production of electric cars in limited quantities can be done in early 2013 and continued mass production of cars in 2014.
Meanwhile, Minister of Transportation E.E. Mangindaan promised to support the use of electric cars in the community by formulating regulations and also the infrastructure.
"We support this, the Ministry of Energy and Mineral Resources will prepare the infrastructure in the form of a station where charging for electric cars," said Deputy Minister of Energy and Mineral Resources, Rudi Rubiandini.
Hafid added, although the concept of design is different from conventional cars, the domestic industry is able to make their own electric cars and make it mass.
Electric bus LIPI, he explained, it still has to use electric motors and batteries imported from the US, while the framework (chassis) from the factory Isuzu.
"But the concept of this electric bus design, up to the body, including interior and exterior is fully made LIPI together workshops bodybuilding bodies of commercial vehicles, trucks, and buses in the country, so we can principle," he said."If the electric bus has been mass-produced, then the price will be konpetitif and demand will increase," he said while hoping this electric car LIPI increasingly trigger the non-fuel car innovation and the next national electric car.