Established, robust and cost effective fixed geometry turbochargers are available in all our product ranges. They continue to be developed for higher efficiency and lower cost for applications where no turbine variability is required.
Cost effective, reliable and durable wastegate technologies for low to mid power densities. Pneumatic actuation of the valve by boost pressure or ECU controlled tank air is possible. For applications without tank air, our Command Valve technology allows further control of the wastegating. Specifications available include gas engines.
The Holset VGT™ first launched in 1998 offers a wide flow range allowing higher boost pressures at low engine speeds, faster transient response times and characteristics ideally suited to EGR engines. Our patented sliding nozzle technology has fewer wear sites than any other variable turbine design, bringing unprecedented durability. Integral engine braking and aftertreatment thermal management capabilities reduce overall system cost whilst increasing reliability.
With over 25 years experience in two-stage turbocharging of large industrial engines, we offer a range of two-stage systems, with or without compressor bypass, for engine sizes from 3.8 litres to 78 litres. Individual turbocharger or complete system design expertise delivers pressure ratio, flow range, transient response and efficiency gains across a range of applications.
First to market in 1991, this technology has been proven in the field to improve fuel efficiency on heavy duty engines. The additional downstream turbine extracts energy from the exhaust stream returning it to the crankshaft, improving fuel consumption (up to 5%), helping to drive EGR and recovering pumping losses. Both radial and axial power turbines are available.
Waste Heat Expander
Waste heat recovery systems are designed to recover heat energy that would otherwise be lost to the atmosphere, improving fuel consumption by more than 5%. Heat can be recovered from EGR coolers, exhaust pipes and other heat sources using a Rankine Cycle system to extract the heat energy and convert it to mechanical or electrical energy using an efficient, compact turbine expander.