EP Manufacturing Bhd (EPMB) will be supplying a new Intake Air-Fuel Module to Proton for use with it’s Campro range of engines, together with it’s technology partner Bosch.
Currently, Proton’s Campro engine uses an aluminum manifold with a single airflow path. This will be replaced with a reinforced plastic molded manifold with variable airflow activated by flaps controlled by electronics from Bosch, and manufactured by EPMB.
The automotive-grade high-thermal plastic material used to make the new manifold is lighter, resulting in overall weight reduction, which will improve fuel consumption slightly. The new intake manifold will substantially improve the efficiency of air intake into the combustion chamber, and better combustion means better response, and increased torque output and smoother power delivery.
Lower end power will also be better, since airflow can be optimized for both low and high end engine speeds. Basically, this is a variable intake geometry system, also known as variable length intake manifold. Nothing cutting edge or new in the market, and has been in practice for years – like Porsche’s VarioRam, Mitsubishi’s Cyclone and Mazda’s VICS. But anything that can improve the performance of the Campro engine is welcomed, don’t you think? Another added effect is the ability to create a swirl effect in the intake air for a better air-fuel mix, if the manifold is designed to do so.
Development for the new variable intake system commenced as long as 12 months ago, and is currently in final advanced tooling stages. It’s expected that the system will be ready for production in the second half of 2007.
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AI-generated Summary ✨
Comments generally agree that the variable intake geometry system for Proton's Campro engine is a positive but modest improvement, mainly aimed at enhancing low to mid-end torque and fuel efficiency. Many recognize that similar technology has long been used in other manufacturers' engines, such as Honda's VTEC and VIM systems, and consider this development as a step forward. Critics point out that the enhancement is relatively small and question Proton's overall R&D efforts, with some claiming the engine still lacks high RPM performance and overall refinement. There is cautious optimism that if combined with other systems like CPS, it could improve engine performance, but doubts remain about its impact on durability and the true significance of the upgrade. Overall, the sentiment is that this is progress, but not revolutionary.