Exora Engine specification - Campro

CAMPRO engine is the combination name of Cam Profile engine developed by Proton with help from lotus technologies. Basically, Campro engine is just a normal engine which can be used with future latest technology like variable inlet and iafm. they claim that this engine provide more power and less fuel consumption. Recently, they have shown that what they claimed is true by winning the most fuel efficient family cars with Proton Persona.

CAMPRO ENGINE SPECIFICATION -PROTON ENGINE TECHNOLOGY ON SAGA, WAJA, SATRIA, PERSONA & GEN2 AND NOW ON EXORA

All Campro engines incorporate with drive-by-wire technology (specifically electronic throttle control) for better response,eliminating the need for friction-generating mechanical linkages and cables. There have been some issues with cracking oil pumps but apparently Proton have introduced a new part recently to solve this problem. A recall has not been announced.

CAMPRO Basic DOHC engine

The basic Campro engine coded as S4PH is a basic DOHC 16-valve 1.6 L engine that produces 110 bhp (82 kW) @ 6,000 rpm of power and 148 N·m (109 ft·lbf) of torque. This is the engine that powers the Proton Gen-2. The S4PH engine can be fitted with Cam Profile Switching (CPS) and Variable Inlet Manifold (VIM) technology. Besides this 1.6 Litre engine, Proton has produced the 1.3 Litre version of the Campro engine.

Even though the S4PH engine seems to be quite powerful at higher revs, its performance is reportedly sluggish at lower revs and this is proven by driving the Gen-2 uphill where drivers who drive the manual transmission version have to shift a lot between 2nd gear and 3rd gear. This is due to its torque dip in the crucial 2,000 ~ 3,000 rpm operating range, where the torque actually decreases before picking up back to the maximum torque at 4,000 rpm. This torque characteristic can be clearly seen in manufacturer published engine performance curves.

Another engine option for the basic DOHC engine is a 1.3L engine coded as S4PE. The S4PE engine produces 94 bhp (70 kW) @ 6,000 rpm and the torque of 120 N·m (89 ft·lbf) @ 4,000 rpm, which is more powerful than the other 1.3L rivals, even with variable valve timing technology, it also (like its bigger brother) displays a torque dip at typical engine speeds of 2,000 to 3,000 rpm.