The high pressure vapour injection system used in the DieselGas Sequent II system provides constant split-second adjustments to meet all operating conditions. The system is self-adjusting, so it can adapt to your driving style, automatically moving from economy to power delivery as driving conditions demand. Calculations are carried out at a rate of ten per second – the injector then responds in time for the next revolution of the crankshaft! This is now the new benchmark for DieselGas.

 

The new V8 Toyota fitted with the Sequent II LPG injection system as displayed at our site at Agquip 2007.

Dyno on new V8 Toyota LandCruiser

Improved Diesel Economy. DieselGas Sequent II allows LPG to be used at idle, substituting a percentage of diesel required for idle. Over extended idle periods, such as in traffic, this substitution adds up to a significant reduction in diesel consumption. This reduction is on top of the usual economy benefits of DieselGas.

 

Improved Power Delivery. Injecting gas from idle improves power delivery right off the mark. There is no delay or waiting for revs or boost pressure to build up - gas flow is ramped up instantly as you take off. The graph below shows, compared to the diesel only fuel system of a Land Rover Defender 300TDi, a 60% improvement in power with the Sequent II system fitted (and this is double the power improvement of the Diesel Gas Australia system).

 

Increased LPG Range. The absolute accuracy of the DieselGas Sequent II guarantees LPG is only used when it is needed. Gas flow is shut off instantly and completely for gear changes, under brakes and when coasting downhill. With this level of control, LPG consumption is reduced by around 20%, and in some cases more.

Automatic Self Adjusting. DieselGas Sequent II adjusts itself as you drive! It constantly adapts to your driving style. The system constantly adjusts to deliver performance or economy as the conditions require. This means that your DieselGas system is tuned with 100% accuracy to deliver the best possible results.

Injection Accuracy and Control. The DieselGas Sequent II processor reads all sensors continuously and constantly adjusts gas flow. The injector responds in time for the next revolution of the crankshaft. This level of accuracy ensures that only the correct amount of LPG is injected at precisely the right time. This level of accuracy and control allows the engine to operate at maximum efficiency under all driving conditions.

Engine Protection. DieselGas Sequent II also offers unsurpassed engine protection - it constantly monitors engine coolant temperature and exhaust gas temperatures. In the event of an engine overheat, regardless of the cause, the system will either reduce or completely shut down gas flow. It will also shut down gas flow in the event of an engine over rev or over boost. The system will not switch on until engine temperature has reached 30 degrees C - this is to ensure LPG does not affect cold starting performance.

Driver Interface. System status is constantly indicated to the driver via a dash mounted LED panel. If any faults are logged the driver is immediately informed as the system shuts itself down. LPG tank level is also indicated.

Advanced Diagnosis. DieselGas Sequent II constantly data logs the last 250 hours of driving. All sensor signals are recorded, as is each LPG tank refill. The system also logs, in real time, each time the vehicle ignition is cycled and each time DieselGas Sequent II is turned on and off. This ensures faults are quickly detected and the driver alerted. This data also allows us to monitor actual driving conditions to check that the system is delivering the best possible results for you.

Durability and Reliability. The system has been designed to operate in mining, road transport and agricultural conditions. These same requirements are used for all light vehicle installations. The whole system, including the processor and wiring harness, can be submerged in water to 1.2 metres, and has been shock proofed to perform faultlessly in the toughest conditions.