The AFS Raven ignition system offers an economical and configurable method to
provide powerful, precision spark energy for gaseous-fuelled engines. The
Raven’s reputation for ruggedness has made it the first choice of
distributorless ignition systems for the diesel-to-gaseous fuel conversion
industry. Designed for four-or-six-cylinder engines, the Raven uses
coil-per-plug, non-wasted-spark technology. Thousands of Ravens in
operation today have proven its reliability under the most demanding conditions.
Recent advances in electronics have enabled the Raven to offer many important
advantages not possible with older, distributor-based systems. The
- boosts spark energy during cranking for reliable starts
- constantly monitors for correct operation and warns the operator in
the case of malfunction
- protects ignition coils by de-activating them in case of malfunction
- resists tampering and requires no adjustments once installed
In addition, the Raven features:
sensing for operation on 12 or 24 V systems without the need for a voltage
- cold start advance for superior starts and best power and efficiency
- multi-spark capability for smooth, stable operation
Distributor systems were developed for petrol engines, which operate with
lower spark energy than high-compression CNG engines. Many conventional
coils cannot withstand CNG’s high firing voltage, leading to eventual
coil breakdown and misfire. The ignition coils provided with
the Raven system are specially designed for demanding natural gas service,
incorporating a diode to prevent engine-damaging pre-spark.
Raven offers special features such as "smart diagnostics". For
example, in the event of a broken spark plug wire, the system can reduce
the dwell to that cylinder to protect the ignition coil. Only the
affected cylinder is disabled, not the entire engine. The Raven can
also alert the vehicle operator with a dashboard light in case of problems,
and store a record of the problem for later access by service technicians.
The Raven Ignition System comes with “RavenWatch” diagnostic
and calibration software, to allow full-featured calibration access for
maximum platform flexibility. Our user-friendly software allows full
control of ignition timing for optimum performance, and can be used with
or without a manifold absolute pressure (MAP) sensor or throttle position
sensor (TPS). Calibration tables can be modified in real time as the
engine is running, facilitating tuning.
Optional features include an engine coolant temperature sensor (ECTS) to
allow advanced ignition timing for cold starts and during engine warm-up
periods. Basic vehicle speed limiting can also be incorporated using
a fuel solenoid.
The Raven is powerful, robust, and competitively priced.