LPG REDUCERS

In automotive gas systems, the fueled gas in the liquid phase is stored in the LPG tank. Before it reaches the engine, or more precisely the intake manifold, it must change its state of aggregation and pressure. In this process, a reducer heated by coolant from the engine cooling system plays a major role. In the offer of our company you know reducers of various manufacturers m.in. TOMASETTO, AC STAG, VALTEK, ZAVOLI, LOVATO, KME. The vast majority are single-stage flip-flop or needle regulators. The former are more resistant to the contaminants associated with years of use, while the latter better expand the gas providing more stable pressure.

The main division of reducers are vacuum versions for older type installations (1st and 2nd generation) and sequential reducers. The first type must provide the right dosage according to the engine's fuel requirements. These regulators deliver gas through an appropriately sized mixer and are two-stage.

The role of sequential regulators is to maintain a constant pressure throughout the entire operating range, starting from idling through maximum acceleration to cut-off. It is usually a fixed pressure set individually for each car. Tomasetto's latest developments in the Nordic XP and AT 13 XP increase pressure at the highest gas demand. A very useful solution for direct injection systems, it helps the injectors to ensure a sufficiently low idle expenditure and to fully cover the demand during hard acceleration.

The reducers differ in the diameter of the inlet port, depending on the power they handle and it is 6 or 8mm. The number of outputs and their diameter is also dictated by the power handled. More efficient regulators have a gas outlet for a 16 mm diameter hose. There are regulators with two gas outputs, which are often a combination of two with a smaller capacity - the so-called TWIN.

The most common defects of reducers are a decrease in efficiency manifested by switching to gasoline during dynamic acceleration. Gas backpressure due to unsealing of the safety valve and excessive pressure increase at the cut-off leading to stalling of the car after stopping the vehicle.

When selecting a reducer, we should keep in mind the reserve of a dozen to several dozen horsepower. So that the reducer is not in contact with the handled power.

According to Polish law, there must be a second solenoid valve before the regulator (one is in the multi-valve on the cylinder) with a filter. Reducers are divided into those with an integrated solenoid valve and a separate one, which we mount in the engine compartment as close to the reducer as possible. The integrated solenoid valve is more likely to be fouled with contaminants from the lpg and sometimes requires cleaning or replacement during operation.

The category of lpg reducers also includes repair kits that reduce the cost of repairing the lpg system when this component is depleted. You can also find individual components such as water elbows, gas elbows, O-rings and other reducer design elements.