Conversion - What is a BSR conversion?
To convert an engine from petrol to ethanol requires a great deal of development work.
- Like tuning it mainly involves changes in the engine's control unit, on a large number of parameters. More information under each tuning kit and Info Ex http://sv.bsr.se/moreinfo/1/
- Ethanol has lower energy content than petrol and therefore more fuel is consumed. The extra requirement is not linear, but is affected by a number of factors, such as surrounding temperature, engine temperature, load, motor speed. To ensure function and driveability in the full range and the durability of the engine the entire engine control program requires total recalibration, regarding fuel and ignition.
- Cold starts require substantially more fuel and the catalyst converter must be started quickly as well to eliminate as much exhaust emissions as possible. It is also important to reduce exhaust emissions so the vehicle complies with requirements during the entire test cycle necessary for certification of the vehicle/conversion. See FAQ http://sv.bsr.se/faq/115/ and http://sv.bsr.se/faq/85/
Emissions must also be acceptable in the whole engine operating range.
- Conversion also requires inspection of distributor capacity. Some engine types require distributor change and then the control program must be calibrated for this and for petrol as well.
- To allow the vehicle to use either E85 or petrol or an optional blend requires a complete system modification and the control program is converted to “flexi fuel”. Behind this technology is several years of development work and our technicians made it possible to implement this technology for some newer control systems. Other control systems cannot handle the required information and for this we developed a technique called MFV. This consists of an extra fuel sensor and a control unit to handle information from the fuel sensor.
- Other requirements are that the OBD system, i.e. the vehicle’s internal diagnosis system must operate as original even after the conversion.
- Peak power increase can only be 5 % more than original for certification. By utilizing the properties of E85, the higher octane rating (104) it is possible to get a considerably higher torque in the mid-ranges, which will improve acceleration significantly without affecting peak power.
- Fuel system components must be checked to see that they can stand ethanol.
- This is only a brief explanation of the vast work behind BSR’s conversion systems.
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- Like tuning it mainly involves changes in the engine's control unit, on a large number of parameters. More information under each tuning kit and Info Ex http://sv.bsr.se/moreinfo/1/
- Ethanol has lower energy content than petrol and therefore more fuel is consumed. The extra requirement is not linear, but is affected by a number of factors, such as surrounding temperature, engine temperature, load, motor speed. To ensure function and driveability in the full range and the durability of the engine the entire engine control program requires total recalibration, regarding fuel and ignition.
- Cold starts require substantially more fuel and the catalyst converter must be started quickly as well to eliminate as much exhaust emissions as possible. It is also important to reduce exhaust emissions so the vehicle complies with requirements during the entire test cycle necessary for certification of the vehicle/conversion. See FAQ http://sv.bsr.se/faq/115/ and http://sv.bsr.se/faq/85/
Emissions must also be acceptable in the whole engine operating range.
- Conversion also requires inspection of distributor capacity. Some engine types require distributor change and then the control program must be calibrated for this and for petrol as well.
- To allow the vehicle to use either E85 or petrol or an optional blend requires a complete system modification and the control program is converted to “flexi fuel”. Behind this technology is several years of development work and our technicians made it possible to implement this technology for some newer control systems. Other control systems cannot handle the required information and for this we developed a technique called MFV. This consists of an extra fuel sensor and a control unit to handle information from the fuel sensor.
- Other requirements are that the OBD system, i.e. the vehicle’s internal diagnosis system must operate as original even after the conversion.
- Peak power increase can only be 5 % more than original for certification. By utilizing the properties of E85, the higher octane rating (104) it is possible to get a considerably higher torque in the mid-ranges, which will improve acceleration significantly without affecting peak power.
- Fuel system components must be checked to see that they can stand ethanol.
- This is only a brief explanation of the vast work behind BSR’s conversion systems.
go back
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