Campro Engine - INFORMATIVE

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Campro Engine

The Campro engine 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. 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 CPS,Cam Profile Switching and the VIM,variable inlet manifold 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 rpm.

Before the engine is ready to be installed in the Gen-2 cars, Proton installed the engine in the Waja specialized for on-road tests.

Currently the Campro engines installed in the Gen-2 has none of the promised cam profile switching (CPS) and variable inlet manifold technologies. No date nor any information has been known as to when Proton will equip its models with the promised full-spec engine.

Another engine option for the basic DOHC engine is a 1.3L engine coded as S4PE. While the power output of S4PH engine can't be considered as impressive, the S4PE engine produces 94 bhp (70 kW) @ 6,000 rpm and the torque of 120 N-m @ 4,000 rpm, much powerful than most 1.3L rivals, even with variable valve timing technology.

The bore x stroke dimensions for both engines are as follows:-
- S4PH (1.6L): 76 x 88 mm, resulting the displacement of 1597 cc.
- S4PE (1.3L): 76 x 73.4 mm, resulting the displacement of 1332 cc.

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.

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 Kompressor 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.

Mercedes Benz usually sources its superchargers from Eaton Corporation

 

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CPS & VIM : How It Works

Engines create power from combusting a mixture of fuel and air. Valve lift creates a gap to draw air into the combustion chamber, and this gap influences the ratio of air in the mixture. Ordinary engines have fixed rate of valve lift, but Cam Profile Switching gives variable valve lift, for optimised airflow into the engine. A High Lift cam profile improves maximum power, whilst the Low profile offers fuel efficiency and low emissions.

Air is supplied to the valves by the engine’s intake manifold. Variable intake Manifold technology intelligently changes the rate of “breathing” according to the engine speed. At low speed, air will drawn through the Long Runner manifold. The resulting slower air flow allows more efficient, thorough mixing of air with fuel. At high speeds, the Short Runner takes over to supply more air for combustion, faster.


CAMPRO ENGINE TECHNOLOGY (CPS & VIM)

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The Campro engine utilizes two ingenious technologies to give high power and rapid response, whilst maintaining low fuel consumption. Cam Profile Switching and Variable Intake Manifold technology.

Together, these technologies give the best if both worlds, essentially combining the best characteristics of two different engines in one compact package. The usual reduction in peak torque caused by High Lift cams is corrected by the Long Runner. The short runner works with the high lift cams to re-tune the engine and generate more power at high speed.


THE CAMPRO ENGINE

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Developed in partnership with Lotus Engineering, this engine grants PROTON complete vehicle design independence. Its breakthrough engine technology produces low fuel consumption, yet gives rapid, high power response, and can even be produced to run on alternative fuels.

Its represents true world class powertrain engineering, and a revolutionary step forward in engine manufacture, with low toxic emissions, low noise levels and above all, highly economical maintenance of long service intervals.

Major design objectives :
- Space-saving transverse east-west direction engine installation
- Designed for long life of at least 10 years or 250,000 km
- Best performance in class
- Flexibility to use future technology (CPS & NGV)
- 80% recyclable to meet 2005 requirements
- comply to future exhaust emission legislation requirement

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TECHNICAL SPECIFICATIONS

ENGINE CODE CamPro S4PH
ENGINE CONFIGURATION 1.6 Litre 16V DOHC
NUMBER OF CYLINDER InLine - 4
DISPLACEMENT 1597cc
BORE 76 mmm
STROKE 88 mm
COMPRESSION RATIO 10:1
VALVE TRAIN Hydraulic Direct Acting
EMS Proton EMS700 Drive-By-Wire with detonation control
ANCILLARY DRIVE Single Belt Auto Tensioner FEAD
CATALYTIC CONVERTER Single Close Couple Catalyst
PEAK PERFORMANCE POWER (Kw)
- TORQUE (Nm)
- 82 @ 6000 rpm
- 148 @ 4000 rpm

EXHAUST EMISSION Euro Step 2/
- Euro Step 3 with EOBD/
- Euro Step 4 with EOBD capable

 

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Proton Gen 2 - INFORMATIVE

Proton Gen-2

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Proton GEN-2 is a car made by Proton launched in the third quarter of 2004. It is based on the same platform as the Proton Waja.

Codenamed WRM (WRM stands for Wira Replacement Model). It is the first Proton model to use the very first Malaysian-own developed engine, invented by Proton and Lotus engineering team: The CamPro Engine, 1.6 litre. The engine is alleged to be sluggish at low revs but Proton claimed that the peak power and torque is well above the 1.6 engines used in other cars. However, later in 2005 the ECU was remapped back to raise the low-end torque, but the maximum power and torque remained unchanged. Lotus Cars which is owned by Proton was instrumental in the development of the car which is evident in the car's ride and handling capability. In Malaysia, the car is rivalled by Hyundai Accent (Verna) and Kia Rio (Pride).

In 2005, a lower-spec version of Proton Gen-2 powered by 1.3L Campro engine was made available in Malaysia with automatic transmission option only.


Proton Gen-2 R3 Concept
Race • Rally • Research (R3) unveiled the prototype concept of the eagerly anticipated Gen.2 R3 at the Dreamcars Asia Motorshow 2005 at JULY 07, 2005. The close to production concept was developed to gauge public response to its styling and performance.

The limited edition track day special was developed with much of the same principles and ideologies as the highly acclaimed Satria R3 but is designed to cater to a totally different market segment. The Gen.2 R3 is expected to appeal to young executives who’ve just settled down with one or two children.

Specification:

Engine:

In-line four cylinder 16 valve DOHC transverse mounted PROTON S4PH
1597cc, Stroke 88.0mm, Bore 76.0mm
Max Power : 135hp @ 6,490rpm
Max Torque : 154Nm @ 5,480rpm
Max RPM : 6,800rpm
Performance : 0 – 100km/h 9.7secs, Top Speed 215km/h
R3-tuned Siemens EMS
Multi-point injection fuel system
Recommended fuel quality : 98RON Super Unleaded
R3-tuned camshafts
Larger fuel injectors
Exhaust system : R3-tuned Full Exhaust System

Transmission:

F5M41 Five-speed manual

Chassis:

Lightened and stiffened chassis developed from PROTON Gen.2

Bodywork:

Weight optimised body
R3-designed ground effect bodykit
X28 Incognito Black with R3 Blood Stripe
Total weight ~ 1100kg
Black full leather Momo Tuner steering wheel with red-stitching
Recaro SR4 front seats with matching rear seats trim
Lightened interior trim in black and R3 red

Suspension:

MacPherson Strut with anti-roll bar front and Multilink with anti-roll bar rear
R3-tuned suspension geometry
R3-tuned front and rear anti-roll bar
R3-tuned spring and damper rates with lowered ride height
R3 stiffer rubber suspension bushes

Braking System:

Non-ABS system
Cross-drilled and slotted ventilated discs with R3-Mintex high performance brake pads front
Cross-drilled and slotted solid discs with R3-Mintex high performance brake pads rear

Rims / Tyres:

Lightweight R3-Advanti RSW-01
--Front / Rear : 7J x 17

Yokohama Advan AD07
--Front / Rear : 215/40 R17


Electrical System:

Foglamps removed for weight reduction


Trivia
The Proton GEN-2 was one of two models (the other being the Proton Savvy) that MG Rover was looking to rebadge when it entered talks with Proton's parent company in the mid 2000s. Both Auto Express and Autocar published shots of the car with a digitally recreated Rover grill.