Proton Car Engines, Arena engine, Gen-2, Perdana
The Campro car engine for Proton
is the first automotive engine ever developed by the Malaysian automotive corporation,
Proton. The name Campro is short for Cam Profile. This engine powers the Proton
Gen-2, the Proton Satria Neo, the Proton Waja Campro as well as Proton's future
models. Engines and GearBoxes are here providing quality used, reconditioned
or secondhand Proton car engines. The Campro engine is aimed to show
Proton's ability to make their own engines that produces good power output and meets
newer emission standards.
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) @ 6,500 rpm of horsepower and 148 N-m 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 L engine, Proton has produced the 1.3 L 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 uphills
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 between 3,000 ~ 3,500 rpm where
the torque decreases slightly before picking up back to the maximum torque at 4,000
Campro CPS and VIM engine
In addition to the basic DOHC engine, Proton developed its own variable valve
timing technology that works similar with other variable valve technologies such
as Honda VTEC and Toyota VVTi, named as CPS (Cam Profile Switching) technology.
The usage of CPS tehnology will raise the maximum power up to about 127 bhp and
will improve the low-end torque to its maximum value which will maintain until about
5,000 rpm. The technology is said to be applied to newer Gen-2s and future models
starting from the end of 2005, but currently the CPS technology is still under testing.
The Campro's Variable Intake Manifold technology is currently being developed by
Robert Bosch GmbH, and is expected to make it's debut in the second half of 2007.
Campro GDI engine
Recently, Proton is developing their own gasoline direct injection version of Campro
engines which will be used in the future. Currently, the Campro GDI engine is still
under research and development, therefore very little information available for
the Campro GDI engine.
Supercharged Campro engine
Recently, Proton has announced to collaborate with Kleemann, the company that supplies
superchargers for Mercedes-Benz compressor models for the coming Proton Satria replacement
model. Little is known about the engine, but the engine is rumored as a 1.8L engine
equipped with a supercharger supplied by Kleemann.
Hybrid Campro engine
Recently, Proton and Lotus have announced their concept model of a Proton Gen-2
powered by a hybrid powerplant that uses the Campro engine. The concept model wasrevealed
during the 2007 Geneva Motor Show in March 2007.
The hybrid powerplant system, which is known as EVE system (Efficient, Viable, Environmental)
will be using the same S4PH engine as the one that powers the present gasoline version
of the Gen-2, combined together with a 30 kW, 144V electric motor. The main purpose
of the hybrid powerplant system is to provide a hybrid system that can be retrofitted
to existing models, retaining the same powerplant and also eliminates the need to
develop a completely different platform, like the Honda Civic Hybrid.
The EVE Hybrid System will
have 3 key technologies
"Micro-hybrid" start-stop system - An integrated starter-alternator
system is installed to switch off the engine automatically when the engine stops,
for example at the traffic light. The engine will automatically restart when the
gas pedal is depressed.
Full parallel hybrid technology - Combines the existing S4PH engine with a 30 kW,
144V electric motor, resulting in higher power (141 bhp combined), higher torque
(233 N-m combined), lower emission (up to 22% carbon dioxide reduction) and better
fuel economy (up to 28%). The system
also includes regenerative
Continuously Variable Transmission (CVT) - The CVT system provides an infinite number
of gear ratios for better efficiency.
The combined power and torque
for the powerplant system are as follows
Max power (gasoline engine only): 110 bhp (82 kW) @ 6,000 rpm
Max torque (gasoline engine only): 148 N-m @ 4,000 rpm
Max power (combined): 141 bhp (105 kW) @ 5,500 rpm
Max torque (combined): 233 N-m @ 1,500 rpm (limited to 180 N-m continuous)
Proton Cars are: Arena,
Gen-2, Perdana, Putra, Saga, Satria, Satria R3, Savvy, Juara, Tiara, Waja, Wira.