ASHOK LEYLAND DEVELOPS CNG ENGINE
Hinduja group flagship Ashok Leyland (ALL) has developed the country’s first 1-litre-per-cylinder, 6-cylinder CNG engine for buses, employing multi-point fuel injection (MPFI).
The CNG technology pioneer has launched an engine series that conforms to the Euro IV emission standards. This range is the outcome of the in-house R&D efforts of the company that rolled out the first CNG bus engine in the country a decade ago.
“With this engine, we step into the more challenging phase of transient cycles mandated in the Euro-IV norms of the future,” said Ashok Leyland MD R. Seshasayee. India's Ashok Leyland Ltd. said on Monday it had signed an agreement with Australia's Brehon Energy Plc for technology for
The high-power engine uses stoichiometric combustion technology (chemically correct air-fuel ratio) in combination with three-way catalytic converter to reduce the emissions to the lowest level possible.
The MPFI system delivers the required gas quantity at the intake manifold according to the vehicle demand, even in transient operating conditions. Exhaust Gas Recirculation (EGR) used in this engine not only lowers nitrogen oxides emission but also restricts the thermal load on engine components.
The quantity of EGR is controlled by the difference in pressures between the exhaust manifold and the turbocharger’s compressor inlet.
The high-performance CNG engine features a new state-oft-he-art electronic control unit that controls sequential gas injection and high-energy ignition systems. Plug-on coils used in the engine, along with long life spark plugs, makes for maintenance-free operations.
The engine is designed and optimised for high power and torque output with low-fuel consumption and emission.
