Engine Mechanical - 5.0L (4V): Other Ford Mustang V рестайлинг

Engine Code Information Label

The engine code information label, located on the valve cover, contains the following

Scheme 1550

ITEM DESCRIPTION

Scheme 1551

Induction System

The SFI provides the fuel/air mixture needed for combustion in the cylinders. The 8 solenoid-operated fuel injectors

1. are mounted in the fuel injection supply manifold and the intake manifold above the cylinder heads.
2. meter fuel into the air intake stream in accordance with engine demand.
3. are positioned so that their tips direct fuel just ahead of the engine intake valves.
4. supply fuel from the fuel tank by a fuel pump mounted in the fuel tank.

Crankshaft

The crankshaft is supported on the bottom of the cylinder block by 5 crankshaft main bearings.

Camshafts

The camshafts

1. are arranged in pairs, one each (intake and exhaust) on each cylinder head.
2. are synchronized through a secondary timing chain.
3. depress the roller followers to actuate the valves.

Valve Train

The valves are actuated by a hydraulic lash adjuster and roller follower. The hydraulic lash adjusters and roller followers

1. provide hydraulic lash adjustment.
2. ride on the camshaft lobes.

Twin Independent Variable Camshaft Timing (VCT) System

The twin independent VCT system allows variable control of intake valve closing 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.

PCV System

All engines are equipped with a closed-type PCV system recycling the crankcase vapors to the upper intake manifold.

Oil Pump

The lubrication system of the 5.0L (4V) engine 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 using top seal rotors.

Generically, this design is known as a gerotor pump, which operates as follows

1. The oil pump is mounted on the front face of the cylinder block.
2. The inner rotor is piloted on the crankshaft post and is driven through flats on the crankshaft.
3. System pressure is limited by an integral, internally-vented relief valve which directs the bypassed oil back to the inlet side of the oil pump.
4. Oil pump displacement has been selected to provide adequate volume to make sure of correct oil pressure both at hot idle and maximum speed.
5. The relief valve calibration protects the system from excessive pressure during high viscosity conditions.
6. The relief valve is designed to provide adequate connecting rod bearing lubrication under high-temperature and high-speed conditions.

Scheme 1552

ITEM DESCRIPTION

For basic engine mechanical concerns, refer to ENGINE MECHANICAL SYSTEM - GENERAL INFORMATION article. For driveability concerns, refer to the INTRODUCTION article.