Overview
The 1.5L GTDI 4-cylinder engine has the following features:
Engine Identification
Always refer to these labels when installation of new parts is necessary or when checking engine calibrations. The engine parts often differ within a CID family. Verification of the identification codes will make sure the correct parts are obtained. These codes contain all the pertinent information relating to the dates, optional equipment and revisions.
Engine Code Information Label
The engine code information label, located on the front side of the timing cover, contains the following:
Item | Description |
---|---|
1 | Engine part number |
2 | Engine displacement - 1.5L |
3 | Engine build date - 0YYM(A-L)DD |
4 | Plant code - Bridgend |
Engine Cylinder Identification
System Operation
Lubrication System
The engine lubrication system is of the force-feed type in which oil is supplied under full pressure to the crankshaft, connecting rod bearings, camshaft bearing caps and variable camshaft timing (VCT) solenoids. The flow of oil to the valve tappets and valve train is controlled by a restricting orifice located in the cylinder head gasket. Conventional oil pumps account for up to 10% of the mechanical power losses at the nominal speed of an engine, leading to increased fuel consumption. This is caused by the high output of the oil pump, especially at high engine speeds. When a variable oil pump is used, the output can be matched to the required oil flow in a flexible manner, depending on the temperature and the engine speed.
The principle component of the variable oil pump is formed by a vane pump with an adjustable outer ring (vane pump adjusting ring). The vane pump adjusting ring is moved to the left or right depending on the oil pressure.
The lubrication system is designed to provide optimum oil flow to critical components of the engine through its entire operating range.
The heart of the system is a positive displacement internal gear oil pump.
Generically, this design is known as a variable oil pump or vane-type pump, which operates as follows:
Valve Train
The valve train uses direct acting mechanical buckets (DAMB). The camshaft lobes are positioned directly above mechanical buckets which are positioned on top of the valves.
Twin Independent Variable Cam Timing (Ti-VCT)
The Ti-VCT system allows variable control of the valves which optimizes combustion at full load providing improved power and low speed torque (broadening the torque curve) which enables variable valve overlap which provides better fuel economy and emissions and provides optimized cold start operation with improved exhaust emissions.
WARNING: Always ride and drive with your seatback upright and properly fasten your seatbelt. Fit the lap portion of the seatbelt snugly and low across the hips. Position the shoulder portion of the seatbelt across your chest. Pregnant women must follow this practice. See the following figure.