Ceramic high-temperature glow plugs
The new ceramic high-temperature glow plug ("NHTC glow plug", "New High Temperature Ceramic") has a fully ceramic heating element. It reaches an operating temperature of 1000 °C in two seconds and can afterglow for up to ten minutes at temperatures up to 1350 °C. That means: It glows in push phases or during the regeneration phase of the particle filter and thereby minimises the particle emissions during this time.
The NHTC ceramic glow plug was specially developed by NGK to enable automobile manufacturers to comply with the Euro 4 and Euro 5 emissions standards. One of the goals of these standards is to reduce the compression ratio in diesel engines. NHTC glow plugs reach a temperature of 1,000 °C in less than two seconds and can after-glow for more than ten minutes at temperatures of up to 1,350 °C. Optimal combustion is assured even with low compression ratios. In addition, the NHTC glow plug can glow intermediately to prevent cooling of the particle filter in deceleration phases.
