Hestec-omadused
Postitatud: 09.06.2006 0:49
Hestec is suitable for ordinary and race-cars where electric fuel injection systems are allowed
Hestec is suitable for charged and non-charged engines
Hestec can be used either as a pure injection version or as combined injection and ignition control version
Hestec is suitable for 3,4,5,6 and 8 cylinder engines
Hestec includes datalogger which makes adjusting easier
Adjustment values can be saved to disk and changed quickly if necessary
Hestec helps to get wider performance of the engine since the fuel mixture and ignition advance can be precisely adjusted from the idle rpm up to maximum rpm with in steps of 300rpm. In fact the control unit adjusts the mixture with in steps of 60 rpm by counting average values between given adjustment figures. The mixture can be adjusted nearly steplessly at a particular rpm according to different loadings of the engine by curved lines.
In turbo cars the mixture can be adjusted from vacuum up to maximum boosting pressure
If good flowing throttle bodies are used more performance can be achieved from engine than using carburetor
Programmable injection system also makes the mixture function properly at all rpms and loads in high performance engines
Sometimes with carburetor, in high curve speeds and in jumps, gas surfaces may ripple. Such problems don't occur when injection system is used and if the tank is proberly built.
In non-charged engines it's possible to use throttle position steering. Vacuum of engine is not controlled but the mixture is adjusted always according to postion of gas pedal and rpm (this works better in high performance engines than vacuum controlled system).
HESTEC DIRECT IGNITION
Two Hall sensors are installed on the crankshaft for checking the position of engine. One sensor is installed 51o before TDC and the other approx. 20o after the TDC of the last cylinder in ignition order. The distributor of car is left unused and it's replaced by double spark coils and coil drive unit, which is controlled by Hestec unit control. Ignition advance can be adjusted at 300 rpm steps according to different loading situations at 0,2o periods. In practice the Hestec unit control adjusts ignition advance at 60 rpm steps by counting average values between given adjustment figures. It's also possible to use cars own revolution speed sensor and triggerwheel or Hestecs own wheel and one sensor (needs adaptercard).
HESTEC DISTRIBUTOR IGNITION
The distributor of car is left in use and one coil is used. Distributor divides sparks to different cylinders according to ignition order. Two Hall sensors are installed on crankshaft 51o before TDC and additionally ignition coildrive unit is installed. Hestec unit control adjust advances like in direct ignition version.
Computer requirements for programming
Processor intel 80286 or faster
IBM compatible
IBM DOS/MSDOS 5.0 systemversion or newer
At least one RS232 standard serial communication port
VGA compatible display controller and color display if possible
Operating memory 512kb free
720kb or 1,44mb flobbydrive
http://www.sci.fi/~hestec2/english/aindexE.htm
Hestec is suitable for charged and non-charged engines
Hestec can be used either as a pure injection version or as combined injection and ignition control version
Hestec is suitable for 3,4,5,6 and 8 cylinder engines
Hestec includes datalogger which makes adjusting easier
Adjustment values can be saved to disk and changed quickly if necessary
Hestec helps to get wider performance of the engine since the fuel mixture and ignition advance can be precisely adjusted from the idle rpm up to maximum rpm with in steps of 300rpm. In fact the control unit adjusts the mixture with in steps of 60 rpm by counting average values between given adjustment figures. The mixture can be adjusted nearly steplessly at a particular rpm according to different loadings of the engine by curved lines.
In turbo cars the mixture can be adjusted from vacuum up to maximum boosting pressure
If good flowing throttle bodies are used more performance can be achieved from engine than using carburetor
Programmable injection system also makes the mixture function properly at all rpms and loads in high performance engines
Sometimes with carburetor, in high curve speeds and in jumps, gas surfaces may ripple. Such problems don't occur when injection system is used and if the tank is proberly built.
In non-charged engines it's possible to use throttle position steering. Vacuum of engine is not controlled but the mixture is adjusted always according to postion of gas pedal and rpm (this works better in high performance engines than vacuum controlled system).
HESTEC DIRECT IGNITION
Two Hall sensors are installed on the crankshaft for checking the position of engine. One sensor is installed 51o before TDC and the other approx. 20o after the TDC of the last cylinder in ignition order. The distributor of car is left unused and it's replaced by double spark coils and coil drive unit, which is controlled by Hestec unit control. Ignition advance can be adjusted at 300 rpm steps according to different loading situations at 0,2o periods. In practice the Hestec unit control adjusts ignition advance at 60 rpm steps by counting average values between given adjustment figures. It's also possible to use cars own revolution speed sensor and triggerwheel or Hestecs own wheel and one sensor (needs adaptercard).
HESTEC DISTRIBUTOR IGNITION
The distributor of car is left in use and one coil is used. Distributor divides sparks to different cylinders according to ignition order. Two Hall sensors are installed on crankshaft 51o before TDC and additionally ignition coildrive unit is installed. Hestec unit control adjust advances like in direct ignition version.
Computer requirements for programming
Processor intel 80286 or faster
IBM compatible
IBM DOS/MSDOS 5.0 systemversion or newer
At least one RS232 standard serial communication port
VGA compatible display controller and color display if possible
Operating memory 512kb free
720kb or 1,44mb flobbydrive
http://www.sci.fi/~hestec2/english/aindexE.htm