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Q-Shield Thermal Insulators

Supplier: Norman G. Clark

Q-Shield is a patented technology that significantly reduces the consumption of diesel fuel or gasoline in internal combustion engines. Q-Shield™ technology employs space-age Thermal Insulators to key parts of the engine.


It does not invade any engine components. Q-Shield™ is fitted to the total air intake system: compressor, turbocharger, exhaust manifold, and intercooler. This total shielding produces a more complete combustion rate. Q-Shield™ operates in engine types with or without intercoolers.

By protecting the air intake system from excessive heating, the air reaches the combustion chamber at lower temperatures. This produces denser air leading to a more complete combustion and much better fuel efficiency.

In addition horsepower is increased at lower RPM’s. A benefit of using Q-Shield™ is the reduction of air pollutants; consuming less fuel and producing fewer emissions. The process increases the heat in the exhaust system which burns off excessive particulates.

Engines with intercoolers

Intercoolers produce cooler and denser air prior to entry into an engine’s combustion chamber. The denser the air the more complete the combustion rate, and the better the fuel consumption.

An intercooler’s effectiveness is greatly reduced when it is exposed, without insulation, to the excessive heat emanating from various heat producing engine components, producing hotter thinner air resulting in a reduced combustion level, thereby increasing fuel consumption.

Q-Shield™ improves the intercooler’s performance and reduces fuel consumption.

Engines without intercoolers

Q-Shield™ technology prevents intake air from heating prior to entry into the combustion chamber.

In an internal combustion system, ambient air initially passes through the air filtration system, located in the engine compartment which are subject to a build-up of heat. The Q-Shield™ system reduces the heat by covering the air box and air intake conduit with thermal insulators.

The air then enters the compressor, which is covered by a Q-Shield™ to further maintain the temperature of air. Maintaining cooler air results in an increase in the air density. The air then leaves the compressor, passes through the hot air inlet pipe, which is also covered by thermal insulators.

The air then enters the combustion chamber in which the air combines with the fuel and is ignited. Since after installation of the thermal insulators, the cooled air is denser, substantially higher amounts of fuel are burned, resulting in the benefits described above.

Engines with turbochargers

Exiting the combustion chamber, unspent fuel and vapors enter the turbocharger which is partially covered by a Q-Shield™. This controls the heat in the turbocharger increasing combustion of exhaust gases. Exiting the turbocharger, the reduced unspent fuel and vapors are expelled through the exhaust system, covered by insulators to maintain the heat, which in turn burns more pollutants.

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