Low resistance injectors are also called peak and hold injectors.

Low resistance injectors are also called peak and hold injectors.

• A. High impedance
• B. Peak and hold injectors
• C. Low impedance
• D. Standard

Answer: (B)

Injectors described as low resistance use a peak current to quickly pull the injector open, then drop to a lower holding current to keep it open. This two-step drive is known as peak and hold, so low resistance injectors are correctly called peak and hold injectors. The other terms don’t fit this naming: high impedance describes the opposite resistance, while “low impedance” or “standard” are descriptive or generic terms, not the specific drive method name.

Injectors described as low resistance use a peak current to quickly pull the injector open, then drop to a lower holding current to keep it open. This two-step drive is known as peak and hold, so low resistance injectors are correctly called peak and hold injectors. The other terms don’t fit this naming: high impedance describes the opposite resistance, while “low impedance” or “standard” are descriptive or generic terms, not the specific drive method name.