VTES
Giving the Environment a Boost™
Description
A fully integrated electric supercharger including all control and power electronics. VTES (Variable Torque Enhancement System) is an air cooled Switched Reluctance machine, coupled to state of the art electronics and an optimised radial compressor, delivering high airflow, pressure and efficiency.
The product is designed for integration into both Otto and Diesel engines to deliver enhanced torque, emissions control and CO2 reduction. It can be optimised to achieve effective engine boosting when used in conjunction with a turbocharger, or on its own.
VTES is optimised to use the standard 12V vehicle architecture. The system can be applied to new or existing vehicles much more rapidly and at lower cost and investment than competitive solutions.
Specification Summary
| Maximum Pressure Ratio | 1.45 |
| Maximum Speed | 70,000rpm |
| Time to Maximum Speed | <350ms |
| Peak Shaft Power | 1.8kW |
| Current Draw - Idle | 1.5 Amps |
| Current Draw - Acceleration | 350 Amps |
| Current Draw - Steady State | 220 Amps |
| Operating temperatures | -40oC to +125oC |
Down-sizing applications
Current small naturally aspirated Otto engine (<1.6l) (click for more)...
Applying VTES to a small capacity Otto engine results in up to 40% torque/performance enhancement with no CO2 penalty on NEDC.
Alternatively, the extra torque can be used to downsize and downspeed to give up to 13% CO2 reduction without loss of performance*.
*Source SAE SETC-2003-32-0039
Extreme 1.2l turbo Otto engine (click for more)...
When applied to a 196PS/285Nm (equivalent to typical 2.5l gasoline engine) 1.2L turbocharged DI Otto engine, VTES delivers increased torque and power at engine speeds below 3000rpm, at which speeds there is insufficient turbine power to deliver the required performance.
Additionally, >90% of the available torque is delivered in 1s thus enabling installation into larger, heavier vehicles with a CO2 reduction potential > 20%.
Also applicable to aggressively downsized Diesel engines
2.0l turbo Otto engine for SUV/Pick up/Minivan (click for more)...
When applied to a 2.0L turbocharged DI Otto engine VTES delivers increased torque and power at low engine speeds between idle and 2000rpm. Under transient conditions 80% of peak torque is available in 1s. This performance delivers significant launch capability.
Thus, VTES enables up to 45% downsizing in SUV/Minivan applications particularly in the launch performance sensitive US market with automatic transmissions. This is achieved using existing 12V vehicle architecture and is an economic alternative to higher voltage ISG based torque assistance.
Up to 15% CO2 reduction potential in this application*.
*Source, ACEA downsizing study
Mid-range Diesel for Light Commercial Vehicle (LCV) (click for more)...
Low speed torque/power increase enables downsizing in Light Commercial Vehicle applications resulting in up to 10% CO2 improvements.
Aids launch performance & urban driveability.
Emissions Control Application
At low engine speeds VTES delivers additional airflow in the first few hundred milliseconds following a transient torque demand. This can be used to control particulate emissions and hence optimise Diesel Particulate Filter (DPF) sizing and loading strategies.
In addition to delivering increased airflow for torque enhancement and particulate control, VTES can also be configured to pump low pressure, cleaned, cooled EGR from the exhaust system post-DPF.
VTES can also be used to purge EGR from the intake system during load changes. This enables part-load NOX with reduced soot deposition issues.
Production Intent Hardware
The VTES product is production ready. An evaluation programme may require:
- VTES Electric Supercharger unit & cooling enclosure
- Mounting brackets and ducting
- By-pass valve (for applications >1.5litre/110PS)
- 12V VRLA Battery
Application support
CPT offers a comprehensive range of application engineering support.
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