A New DDF Engine Conversion Kit
Natural gas has been used
successfully as an alternative
fuel in the transportation sector for spark-ignited engines.
Biofuel technology and dedicated gas engine technologies
are commercially available.
However, no existing applica-
ble technologies are available
for diesel engines. There are
some conventional diesel
dual fuel (DDF) technologies,
but the replacement ratio of
natural gas of these technologies is lower than 50% of diesel fuel and they face
issues of engine efficiency and exhaust emissions.
PTT Public Co. Ltd.’s PTT DIESEL CNG is a new concept for DDF engine
conversions which improves the gas engine characteristics by increasing the
diesel replacement ratio to 50%, increasing engine efficiency 30% and reducing
methane emission 30% compared with conventional technologies. The principle of PTT DIESEL CNG engine control utilizes DF-PCCI (dual fuel premixed
charge compression ignition) combustion technology, which precisely controls
diesel injection parameters, gas injection parameters, the amount of air and
exhaust gas recirculation to provide the mixture for optimum combustion.
PTT DIESEL CNG has three components to convert OEM diesel engines to
DDF: The DIESEL CNG ECU controller, the connection box and the harness.
◗ PTT Public Co. Ltd., www.pttplc.com/en/
No Overcharging Here
Lithium-ion batteries are a widely
adopted power source for electric
vehicles (EV). While having many
advantages, the issue of safety continues to plague this technology, particularly of the battery’s inherent flammability, which can be exacerbated by
overcharging during use.
Methods for overcharge protection
have been sought for decades, using
cell chemistry instead of electronics. The goal has been to develop a
substance that dissolves in the electrolyte of a Li-ion cell, remains inert during
normal operation, becomes activated as overcharging begins and curtails the
overcharging process by removing excess charges as they arrive at the cathode.
Efforts at devising such a material that satisfies the requirements for use in practical Li-ion battery cells designed to power electric vehicles have met with limited
success, until Argonne National Laboratory’s breakthrough in synthesizing
Thorough testing by A123 Systems LLC has shown that ANL-RS2 Advanced
Redox Shuttle Additive is a highly reliable and high-performance electrolyte
additive for EV battery cells using LiFePO4 as the cathode material. When dissolved in the electrolyte of a LiFePO4-based Li-ion battery cell, ANL-RS2 remains
inert until the potential of the cell increases from 3. 6 to 3. 9 V during an overcharging event. At that point, ANL-RS2 becomes activated and is able to accept
excess charges from the cathode and transport them to the anode, thereby accomplishing efficient overcharge protection by providing an internal electrical path
for the excess charges arriving at the cathode.
See the heat with the
NEW A6700sc from FLIR!
The most affordable high resolution, low noise,
highly accurate temperature measurement
infrared camera system around, the A6700sc
eliminates the guess work of traditional
thermal evaluation using thermocouples and
spot guns, making it perfect for research and
CALL 866.477.3687 NOW FOR
SPECIAL PURCHASE INCENTIVES!
Or check out www.flir.com/rdmagazine
to learn more about this high-speed revolution.