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New: highly resilient Bosch EVO spark plugs

Heiderose Dreiner

Heiderose Dreiner >

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Specifically for turbocharged gasoline direct-injection engines

  • Robust spark plug for particularly high demands
  • Spark-plug know-how, production competence and experience since 1902
  • Bosch spark-plug technology for a wide range of applications

Modern turbocharged gasoline direct-injection engines place particularly high demands on their spark plugs’ resilience and reliability. Introducing the new Bosch EVO spark plug, a particularly robust spark plug engineered to reliably ensure a stable ignition throughout its long service live – even if it is subject to the extreme conditions it faces in modern engines. Thanks to its improved isolator design and its high dielectric strength increased to 45 kV, the new spark plugs even withstand events of irregular combustion – known as mega knocking – which can occur in modern highly developed engines.

EVO with laser-welded iridium pin on the center electrode

The new Bosch EVO spark plug was developed to ensure reliable ignition of turbocharged gasoline direct-injection engines. In order to make sure it copes with an increase of pressure as may occur in cases of mega knocking, it is particularly robust – thermomechanically, mechanically and electronically. The laser-welded iridium pin on the center electrode and a platinum plate on the ground electrode ensure its long service life and its high wear resistance. Featuring an improved isolator design, EVO spark plugs cope well with repeated removal and reinstallation. At their installation, the correct torque is to be observed under any circumstances. It ensures the spark plugs’ exact positioning and orientation within the combustion chamber. Bosch EVO spark plugs are to be produced at the Bosch plant in Bamberg, Germany. They will be available as of October this year and mark the beginning of a portfolio expansion. At a first step, EVO spark plugs will be launched for modern gasoline direct-injection engines of Volkswagen and Mercedes-Benz vehicles.

Different electrode alloys to meet the specific requirements of each engine

Depending on the type of engine, the demands modern engines place on spark plugs vary a lot. In close cooperation with the car manufacturers, Bosch thus develops original-equipment spark plugs geared to the specific requirements of each engine. For this purpose, Bosch engineers rely on comprehensive know-how and decades of experience in the fields of gasoline injection and ignition systems. Back in 1902, Bosch solved the issue related to the safe ignition of the air/fuel mixture by means of its first spark plug. Nowadays, Bosch offers matching spark plugs for series-production passenger cars, small engines and stationary gas engines. Lessons learned in motorsports and innovations produced for this purpose regularly influence both development and series production.

During spark plug production, for instance, Bosch uses different electrode alloys featuring different advantages – among other things – to meet the specific requirements of each engine. Special production techniques – such as a nickel-plating process for thread and housing developed by Bosch and also used for the new EVO spark plugs – ensure improved corrosion protection and a long service life.

The Automotive Aftermarket division (AA) 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, as well as aftermarket products and services developed and manufactured in-house. About 14,000 associates in more than 150 countries, as well as a global logistics network, ensure that spare parts reach customers quickly and on time. AA 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 15,000 workshops, and more than 1,000 “AutoCrew” partners.

Additional information can be accessed at www.bosch-automotive-aftermarket.com

The Bosch Group is a leading global supplier of technology and services. It employs roughly 400,000 associates worldwide (as of December 31, 2019). The company generated sales of 77.7 billion euros in 2019. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. As a leading IoT provider, Bosch offers innovative solutions for smart homes, Industry 4.0, and connected mobility. Bosch is pursuing a vision of mobility that is sustainable, safe, and exciting. It uses its expertise in sensor technology, software, and services, as well as its own IoT cloud, to offer its customers connected, cross-domain solutions from a single source. The Bosch Group’s strategic objective is to facilitate connected living with products and solutions that either contain artificial intelligence (AI) or have been developed or manufactured with its help. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.” The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiary and regional companies in 60 countries. Including sales and service partners, Bosch’s global manufacturing, engineering, and sales network covers nearly every country in the world. The basis for the company’s future growth is its innovative strength. Bosch employs some 72,600 associates in research and development at 126 locations across the globe, as well as roughly 30,000 software engineers.

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

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