Sunday, January 1st, 2012
1.Function
An expansion valve injects the high-temperature and high-pressure liquid refrigerant, which has passed through the receiver, from the small hole to cause the refrigerant to expand suddenly and to change ...
Posted in Heater and Aircondition System | No Comments »
Friday, January 14th, 2011
Why the cause of white smoke can be determined by oil loss via the valve guides
(1) The negative pressure of the intake manifold is high when the engine is idle, ...
Posted in Troubleshooting | No Comments »
Thursday, December 23rd, 2010
When the fuel pressure of the commonrail becomes higher than the target injection pressure, the pressure discharge valve receives a signal from engine ECU, in order to open the valve ...
Posted in Diesel Engine Control System | No Comments »
Saturday, December 18th, 2010
Injection Volume Outline of SPV
There are two types of SPV (Spill Control Valve) that control the injection volume.
Conventional type SPV
(used in axial plunger type pump)
Direct-acting type SPV
(used in the radial ...
Posted in Diesel Engine Control System | 1 Comment »
Thursday, December 2nd, 2010
The VVTL-i system is based on the VVT-i system and employs a cam changeover mechanism to change the amount of the intake and exhaust valve lift. This makes it possible ...
Posted in Gasoline Engine Control System | No Comments »
Wednesday, December 1st, 2010
Generally, the valve timing is fixed, but the VVT-i system uses the hydraulic pressure to shift the intake camshaft rotation and vary the valve timing. This makes it possible to ...
Posted in Diesel Engine Control System | 1 Comment »
Friday, July 16th, 2010
1. Feed pump
The vane type feed pump consists of four blades and a rotor. The rotor is driven by the drive shaft, and the blades push against the inner wall ...
Posted in Diesel Engine | No Comments »
Saturday, July 10th, 2010
1. Construction
The delivery valve is mounted on the distributive head of injection pump. The valve spring and delivery valve are mounted in the delivery valve holder. The surface of the ...
Posted in Diesel Engine | No Comments »
Tuesday, July 6th, 2010
1. Four-valve mechanism
The valve mechanism of the diesel engine is basically the same as the one on the gasoline engine. However, some valve mechanisms are distinctive to the engine. The ...
Posted in Diesel Engine | No Comments »
