Over the past year, Rainbow CNG has been assiduously testing a DDF system that would enable to optimize the performance of Diesel engines without invasion.
Our engineer, Mr. Attilio Guidetti, has been instrumental in developing the electronics with which this system can run.
The Diesel Dual fuel System allows an amount of gas to be injected into the engine through the air intake manifold. This improves the rate at which the engine burns fuel, and this translates into a better performance and/or a saving of fuel.
The DDF can be used with either CNG or LPG gas. Using the CNG gas obviously has a better environmental impact.
Starting in February 2009, Rainbow CNG together with Rainbow Fuel Energy Solutions Inc. first tested the system on some of the Jeepneys crowding the streets of Metro Manila. The Jeepneys with Isuzu C240 engine were found to be running 30% smoother and with noticeably improved engine performance. The production of black engine exhaust smoke was significantly reduced.
The testing has continued over a variety of vehicles in Thailand, from pick ups to cars to minivans. The system was tested successfully on Mercedes MD140 2.9 Vip Van finding that the range of fuel saving with CNG went from 45 % to 48%. and pick up Mitsubishi Strada 2.8 D, finding that the range of fuel saving with LPG went from 30 % to 35%.
Together with Engine Expert Enterprise of Malaysia, a successful test was also carried out on a truck Nissan lorry CD45, 20 ton, finding that the overall saving on Diesel consumption was of more than 40%.
THE CONVERTED NISSAN LORRY ON ROAD TEST
The great advantage of the DDF system is that it allows the vehicle operator the flexibility of using two fuels, can gain both economically and environmentally from this and can revert completely to diesel, which is a bonus in terms of the resale value of the vehicle.
The above graph depicts the flexibility of the system. The configuration can be easily adapted to the customer’s needs and driving style. The customer can decide at which level of RPM he wishes to inject gas into the system and get increased power or savings.
The second graph shows the increase of the torque and consequently the increase in power of the diesel engine in gas configuration.
Saturday, January 30, 2010
PTT Chemical and GE sign gas turbine service agreement
PTT Chemical Public Company Limited, Thailand’s largest chemical producer and a regional leader in the petrochemical industry, has signed a service agreement with GE (NYSE: GE) in Singapore to ensure the long-term reliability of nine GE gas turbines at PTT Chemical’s site in Map Ta Phut Industrial Estate, Rayong Province, Thailand.
The 13-year Contractual Service Agreement (CSA) worth US$46.1 million or approximately Baht 1,521 million covers the supply of parts, repairs and field services for planned and unplanned outages for gas turbine-generators and accessory equipment, along with performance guarantees.
Veerasak Kositpaisal, President and CEO of PTT Chemical said, “Through this agreement, GE guarantees the continuing reliability and efficiency of the gas turbines, which improves our efficiency and security as well as enables us to maintain our petrochemical production schedule. The CSA also helps us to effectively manage our maintenance budget over the life of the agreement.”
“While we have received equipment orders from PTT Chemical in the past, this marks our first CSA with the company,” said Kovit Kantapasara., GE Energy Country Executive for Thailand and Indochina. “We hope to build on this agreement to provide similar services to other companies in the PTT Group.” Overall, GE has supplied more than 20 gas turbines to the petrochemical business of the PTT Group.
PTT Chemical is a diversified and integrated chemical producer offering a wide variety of petrochemical and chemical products. Its product portfolio includes ethylene and propylene, collectively called olefins, downstream derivatives such as Polymers and Ethylene Oxide and Ethylene Glycol, and oleochemicals. The company’s gas-based plants have a total annual capacity of 2,888,000 tons of olefins, making it Thailand’s largest olefins producer and the second largest in all of Asia.
GE is a diversified global infrastructure, finance and media company that's built to meet essential world needs. GE Energy is one of the world’s leading suppliers of power generation and energy delivery technologies providing integrated product and service solutions in all areas of the energy industry including coal, oil, natural gas and nuclear energy; renewable resources such as water, wind, solar and biogas; and other alternative fuels.
The 13-year Contractual Service Agreement (CSA) worth US$46.1 million or approximately Baht 1,521 million covers the supply of parts, repairs and field services for planned and unplanned outages for gas turbine-generators and accessory equipment, along with performance guarantees.
Veerasak Kositpaisal, President and CEO of PTT Chemical said, “Through this agreement, GE guarantees the continuing reliability and efficiency of the gas turbines, which improves our efficiency and security as well as enables us to maintain our petrochemical production schedule. The CSA also helps us to effectively manage our maintenance budget over the life of the agreement.”
“While we have received equipment orders from PTT Chemical in the past, this marks our first CSA with the company,” said Kovit Kantapasara., GE Energy Country Executive for Thailand and Indochina. “We hope to build on this agreement to provide similar services to other companies in the PTT Group.” Overall, GE has supplied more than 20 gas turbines to the petrochemical business of the PTT Group.
PTT Chemical is a diversified and integrated chemical producer offering a wide variety of petrochemical and chemical products. Its product portfolio includes ethylene and propylene, collectively called olefins, downstream derivatives such as Polymers and Ethylene Oxide and Ethylene Glycol, and oleochemicals. The company’s gas-based plants have a total annual capacity of 2,888,000 tons of olefins, making it Thailand’s largest olefins producer and the second largest in all of Asia.
GE is a diversified global infrastructure, finance and media company that's built to meet essential world needs. GE Energy is one of the world’s leading suppliers of power generation and energy delivery technologies providing integrated product and service solutions in all areas of the energy industry including coal, oil, natural gas and nuclear energy; renewable resources such as water, wind, solar and biogas; and other alternative fuels.
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