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Press release #Mobility Aftermarket
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New and particularly robust generation of Bosch industrial spark plugs with increased service life

Double Iridium spark plugs for stationary engines

  • Reduced costs thanks to increased service life, less engine breakdowns and increased service intervals
  • Significantly increased head bending strength, dielectric strength and warm gas tightness
  • Service life increased by 30 percent compared to previous generations of industrial spark plugs
Nico Krespach

Nico Krespach >

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Due to their increased efficiency, turbocharging and leaner fuel mixtures, modern stationary engines – such as the ones used in combined heat and power plants – place much higher demands on the spark plugs used, too. Especially their thermal and mechanical characteristics have to meet increased requirements to ensure flawless operation of industrial engines around the clock. The new generation of Bosch Double Iridium industrial spark plugs, now available with the types 7305 and 7308, meets these requirements and stands out for an increase in service life by 30 percent in comparison with the previous generation of spark plugs. The spark plugs thus also help reducing the operating costs.

Thanks to high-grade materials, modern production methods and an improved design, the new generation of Bosch industrial spark plugs is particularly robust. The enlarged profile of the ground electrode, for instance, increases both mechanical strength and thermal conductivity. The industrial ceramic material used is of particularly high quality. It increases the dielectric strength. But the new spark-plug generation also sets new standards in terms of head bending strength. In addition, an improved coating technique and a Bosch-patented laser welding method for the Iridium electrodes increase the electrode service life. Besides the service life, the warm gas tightness was significantly improved as well. This is particularly important for turbocharged lean burn engines.

Test customers confirm robustness and cost reduction

Furthermore, a new nickel plating technique used for the new generation of Bosch industrial spark plugs also prevents spark plug seizure at the engine thus easing the maintenance, particularly if it is run with landfill gas or biogas. Due to the increased head bending strength and the high dielectric strength, reliable operation of the engine is ensured at any time – even under extreme operating conditions. Customers who tested the new generation of Bosch industrial spark plugs at their stationary engines did not only confirm the high durability of the new spark plugs, but also commented on prolonged service intervals, reduced engine downtime and lower costs.

Contact person for press inquiries:
Nico Krespach
Phone: +49 721 942-2209

The Mobility Aftermarket division (MA) provides the aftermarket and repair shops worldwide with modern diagnostic and repair shop equipment and a wide range of spare parts – from new and exchange parts to repair solutions – for passenger cars and commercial vehicles. Its product portfolio includes products made as Bosch original equipment, products developed in-house and specifically manufactured for the aftermarket, as well as services. About 16,000 associates, as well as a global logistics network, ensure that spare parts reach customers quickly and on time. MA supplies testing and repair-shop technology, diagnostic software, service training, and information services. In addition, the division is responsible for the “Bosch Service” repair-shop franchise, one of the world’s largest independent chains of repair-shops, with some 13,000 workshops, and more than 1,000 “AutoCrew” partners in over 100 countries. In addition, with Bosch Classic, MA supports owners of classic cars with a wide range of spare parts and services.

Additional information can be accessed at www.boschaftermarket.com

The Bosch Group is a leading global supplier of technology and services. It employs roughly 429,000 associates worldwide (as of December 31, 2023). The company generated sales of 91.6 billion euros in 2023. Its operations are divided into four business sectors: Mobility, Industrial Technology, Consumer Goods, and Energy and Building Technology. With its business activities, the company aims to use technology to help shape universal trends such as automation, electrification, digitalization, connectivity, and an orientation to sustainability. In this context, Bosch’s broad diversification across regions and industries strengthens its innovativeness and robustness. Bosch uses its proven expertise in sensor technology, software, and services to offer customers cross-domain solutions from a single source. It also applies its expertise in connectivity and artificial intelligence in order to develop and manufacture user-friendly, sustainable products. With technology that is “Invented for life,” Bosch wants to help improve quality of life and conserve natural resources. The Bosch Group comprises Robert Bosch GmbH and its roughly 470 subsidiary and regional companies in over 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. Bosch’s innovative strength is key to the company’s further development. At 136 locations across the globe, Bosch employs some 90,000 associates in research and development, of which nearly 48,000 are software engineers.

Additional information is available online at www.bosch.com, www.iot.bosch.com, www.bosch-press.com.

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