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Bosch Introduces Duraterm Glow Plugs

Bosch's revolutionary Duraterm glow plug technology utilizes a self-regulating control system that reduces glow wait time by more than 50 percent, said the company.
By Shop Owner Staff
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Bosch’s revolutionary Duraterm glow plug technology utilizes a self-regulating control system that reduces glow wait time by more than 50 percent, said the company. The patented dual-control regulating and heating coil effectively directs current draw, enabling the glow plug to reach higher temperatures more quickly for faster engine start-up, and the regulating coil keeps the heating element within the 1000° – 1100°C optimal temperature range, preventing engine damage due to over voltage or overheating.

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“The advanced Duraterm glow plug provides a ‘post-glow’ heating phase for vehicles with a ‘post-glow’ control system. In the post-glow phase, glow plugs continue to operate for up to three minutes after the engine has started, improving overall engine performance and reducing smoke emissions and combustion noise,” said Ross Sandercock, Bosch Director of Product Management.

This ‘post glow’ ability, built into the Duraterm glow plug, is a key element in Duraterm’s contributing to increased diesel engine efficiency, according to Sandercock.

Operating Within Safe Temperature Range Essential

Glow plugs are designed to operate within a temperature range of 850° – 1100°C. During operation, the glow plug controller switches current to the glow plug for a specific period of time to allow for proper heating. However, if the controller fails, current could be applied for a longer than specified time raising the temperature of the glow plug in excess of the 1100°C upper limit. Under these conditions, the glow plug overheats causing the casing to swell, split or burst, which allows air to enter the coil area, causing immediate glow plug failure.

“Duraterm glow plugs prevent any overheating and potential engine damage with their built in self-regulating control system, avoiding the need to remove a glow plug with a distended or broken tip. This may require engine head removal — a time-consuming and costly repair,” Sandercock said.

Durability under the stress of extended diesel engine operation is essential for a glow plug, and Duraterm’s glow tube material, Iconel 601, resists corrosion and vibration for long service life while fine-grained ceramic insulating powder provides superior electrical insulation and high thermal conductivity. Twin Viton seals protect coils from exhaust gas damage, and connectors are designed to OE specifications for precise fit and easy installation.

Duraterm technology is available for the majority of diesel car and light truck applications. Other applications utilize standard glow plug technology as called for by OE specifications.

Bosch is a proud supporter of the Automotive Aftermarket Suppliers Association’s Know Your Parts education and awareness campaign. This initiative promotes the importance of quality brand name aftermarket parts backed by full service suppliers, and its impact on delivering reliable products to today’s motorists. For more information visit: www.AASAKnowYourParts.org. 

For more information, visit www.boschusa.com.

For more information on Bosch Automotive Products, visit www.boschautoparts.com.

For more information on Bosch Diagnostics, visit www.boschdiagnostics.com.

Find Bosch Auto Parts on Facebook, visit www.facebook.com/boschautoparts.

Follow Bosch Auto Parts on Twitter, visit www.twitter.com/BoschAutoParts.

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I sometimes share case studies of the clients I have been able to assist in my role as an aftermarket business broker and provider of intermediary and advisory services. I do that when I think the story will provide a reader in similar circumstances with new insights or helpful information.
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Although every sale of a shop in which I am involved has its own unique set of circumstances, which makes my job both very interesting and very challenging, Cowden Automotive stands out as particularly memorable because I was able to demonstrate to the long-time owner, Paul Cowden, that his business was worth about three times what he had initially thought.
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