REV limiter - Diesel
ECM Titanium Tuning Tips
¡Aumenta el potencial con ECM Titanium!
¡Aumenta el potencial con ECM Titanium!
ECM Titanium Tuning Tips
Modifications to ECU parameters that produce special effects aren’t exclusive to petrol engines. Turbo diesel engines can also deliver a thrilling performance! Known for their durability and fuel efficiency, these engines were widely used by car manufacturers, especially in the early 2000s. This widespread adoption has led to a large community of enthusiasts who customize their vehicles through various ECU optimizations, including the activation of the REV limiter, which enhances the vehicle’s sound with a more aggressive tone.
For diesel engines, where it’s not possible to cut ignition (unlike petrol engines with spark plugs), the REV limiter is achieved by sharply cutting off fuel injection at a specific RPM. This results in a sudden drop in engine speed, followed by a quick rise, creating the desired sound effect.
To activate the REV limiter on a diesel engine, adjustments need to be made to several ECU parameters, depending on the desired effect, including:
It’s important to note that there are two types of limiters: «Hard REV» and «Soft REV».
The Hard REV, also known as the «Popcorn Limiter,» is achieved by adjusting the torque and fuel injection parameters to set the RPM at which the limiter will activate. Additionally, the injection timing maps must be adjusted to delay the injection, allowing unburned fuel to fill the combustion chamber and be expelled through the exhaust. This type of limiter is the most aggressive, creating a distinctive visual and sound effect.
The Soft REV can be configured in two ways. When available, you can use the RPM limiter maps in the ECU’s driver, which function as overspeed thresholds. Once a certain limit is exceeded, the ECU automatically cuts fuel injection to prevent engine damage. By adjusting this threshold, you can precisely define the RPM at which the fuel cut-off occurs, thus activating the limiter. Alternatively, when this option isn’t available, adjustments can be made to the fuel and torque maps. In this case, the procedure is similar to the Hard REV, but without altering the injection timing.
Powergate
Powergate es la nueva generación de programador portátil de unidades de control de motor para coches y motocicletas, creado para ofrecer a cada conductor una experiencia de conducción personalizada de su vehículo.
Gracias a un diseño compacto y conexión con una aplicación intuitiva, Powergate proporciona una experiencia de tuning del vehículo altamente personalizable y precisa.
REV Limiter (Hard REV) on BMW 330D E92:
Thanks to the maps available in the driver for the Bosch EDC16C35 ECU, installed in several BMW diesel models, such as the 330D E92, you can precisely activate and customize the intensity of the REV limiter.
This guide will show you how to adjust the torque, fuel, and injection timing maps to achieve the desired effect. We will use ECM Titanium software for these modifications, as it allows you to:
Torque limiter tuning: the first step involves setting the maximum torque limiter value near to zero at a specific RPM across all gears. This defines the RPM at which the limiter will activate to create the REV limiter effect.
Modifying fuel injection maps: similarly to the torque adjustment, you must zero the fuel injection values at a specific RPM, selected based on your needs.
Injection Timing map adjustment: this adjustment is crucial for achieving and regulating the intensity of the Hard REV. It’s this operation that differentiates the behavior of the limiter between Hard and Soft REV.
In the injection timing map, you must set the desired RPM (the limiter RPM defined earlier) and then delay the injection. This ensures fuel is injected when the piston has already reached Top Dead Center (TDC) and is in the expansion phase.
This combination results in unburned fuel entering the exhaust, accompanied by increased gas pressure, producing the characteristic popping exhaust sound (and in extreme cases, flames).
¿Quieres mejorar aún más en lo que haces?
Echa un vistazo a nuestros programas de formación en todo el mundo. Invierte en tus habilidades y aumenta tu potencial de ganancias. Un especialista estará contigo en cada fase del recorrido, para que puedas comenzar a trabajar con confianza de inmediato.
The power of information will be in your hands, and with ECM Titanium, you can make the most of it: contact us today for more information.
Es una empresa que, desde hace treinta años, inventa, crea y produce las mejores herramientas y software para el chiptuning y la mecatrónica.
En estos años de duro trabajo, hemos pasado de ser una pequeña empresa provincial a una multinacional con oficinas y distribuidores en todo el mundo.
P.IVA IT02007510023
Cap. Soc. € 10.329,14
Registro Produttori AEE IT10120000006984
Alientech © 2024 Alientech Srl, All Rights Reserved Privacy – Cookie – Condiciones de uso – Avisos legales – Editar la configuración de las cookies
Alientech Srl Cap. Soc. € 10.329,14 P.IVA IT02007510023 Registro Produttori AEE IT10120000006984
