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The replacement interval is 30,000 km.

LPG combustion has specific problems. Many scientific researches have already proved that LPG as an alternative fuel is advantageous for internal combustion engines from several aspects.

The most important is that the engines utilising LPG as fuel produce combustion products which are friendlier to the environment than those produced by the petrol or fuel oil engines.

The amount of carbon dioxide arising from LPG combustion is lower by 10% to 25% than in petrol combustion. And carbon monoxide has a substantial impact on global warming.
From the viewpoint of ecological operation the user can enjoy the advantage of lower working costs.

However, LPG combustion has also specific problems. One of them is more difficult ignitability due to non-homogenous mixture of gases in the combustion chamber.
This results in higher voltage required by the ignition system and more difficult starting ability at low temperatures.

These problems can be eliminated by BRISK Silver spark plugs designed specially for gas igniting in LPG engines.

BRISK Silver spark plugs have a special shape of spark gap which facilitates easier access of gases to the discharge, central silver electrode of small diameter, and electrode gap 0.55 and 0.9 mm.

The central silver electrode of small diameter together with narrow ground electrode substantially reduces the required voltage.

The replacement interval is 30,000 km.

BRISK Premium LGS spark plug

• - completely new spark gap shape
• - Unique patented spark plugs
• - higher output
• - better acceleration
• - better utilisation of fuel energy
• - spark gap protruding extremely deep into the combustion chamber
• - maximally long sliding spark (almost 3 mm)
• - integrated ground electrode improving heat removal from the active part of the spark -      plug and ensuring optimal function
   

Ionisation and flashover occurs automatically at a point with an optimal composition of the fuel/air mixture. The spark gap is not shielded by the ground electrode, and the mixture can flow to it without limitation. Better ignition of the mixture and thus higher speed of combustion, faster flame spread, especially at the beginning of burning, results in better utilisation of fuel energy. Subsequent increase in the effective mean pressure in the engine cylinder and equalisation of the values of effective mean pressures in individual working cycles contributes to the increase in the engine output.

Excellent utilization of fuel energy allows increased engine power!

The round spark gap with extremely long surface spark discharge uses the possibility of spark-over along the whole perimeter of 360^o. The spark always flashes in the place with the highest fuel concentration; the spark gap in the Brisk Premium "LGS" spark-plugs protrudes deep into the combustion chamber. The significantly higher combustion velocity in the initial spread of the flame in the combustion chamber allows excellent utilization of fuel energy, which provides higher engine power.
 

The replacement interval:
ZC 20,000 km
ZS 30,000km

Multispark plugs increase engine output. Two auxiliary electrodes applied by a special patented technology on the insulator tip enable simultaneous flashover of two surface and one air-gap spark at one impulse of the ignition system.

Each of the sparks can flash along the whole perimeter of the auxiliary electrode (360O). The spark gap protrudes deep into the combustion chamber and improves initial phase of spread of the flame front. The number of sparks as well as the distance between them reduces possible misfire of the mixture in the combustion chamber, increases the combustion speed and engine performance.

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