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Achieving the speed and performance of a true supercar was merely the starting point of this development. In addition, the development also focused on achieving emotive performance attributes to enhance driver appeal. For this the engine was developed to assist a vehicle handling provides unsurpassed response, the creating a feeling of infinite acceleration potential, response is instantaneous and based on close understanding of driver's reactions and Awe inspiring sound is providing. It meets the latest emission standard Euro V and achieves good fuel consumption with a wide range stoechiometric air fuel ratio, till speeds up to 240km/h.

This paper dealt with the interface stresses of thin wall box-shaped bolted flanged structures when internal pressure was applied. The flexible flanges were fastened by M8 bolts and nuts with an initial clamping force after being joined with silicone sealant. In the elastic and thermo elastic F.E.A, the effects of bolt pitch distance, bolt positions, flange rigidity and flange thickness were examined. In addition, the effect of the liner thermal expansion coefficient and Young's modulus of the joint in the steady temperature state were also examined. The experimental results were in fairly good agreements with the numerical results. From the results, it was found that the effect of thermal condition is greater than that of internal pressure on the interface stress distributions. In other words, it indicates that thermal conditions are affective on the sealing performance rather than internal pressure application in this case.

Recently, joints combining shrink fit with anaerobic adhesives (bonded shrink fitted joint) have been appeared in order to increase the joint strength. This paper deals with stress analysis and strength estimation of the bonded shrink fitted joints in which the ring is fitted at the end/middle of the hollow shafts subjected to torsion. The stress distributions at the interface of the joints are analyzed using axisymmetric theory of elasticity as a three-body contact problem. The effect of the inner diameter of a shaft, outer diameter, height of and stiffness of the ring on the interface stress distributions are examined in the numerical calculations. It is found that a rupture of adhesive layer initiates from the edge of the interfaces close to the end of the shaft to which a torsional load is applied. The numerical results show more conservative values than the experimental results.

It is important to improve the sealing performance of bolted flanged joints subjected to internal pressure. Recently, bolted joints with flexible flanges of stamped steel have been used in an oil-pan structure of automobile from a lightweight viewpoint. However, it is difficult to improve the sealing performance of flexible bolted flanged joints due to the reduction of the interface pressure. In this paper, a liquid sealant is applied to a box-shaped flexible bolted flanged joints such as oil-pan structures subjected to internal pressure in order to improve the sealing performance. In the experiments, an internal pressure when a leakage occurred was measured in the case where box-shaped bolted flanged joints in which liquid sealant was applied to the interfaces between aluminum flexible flanges (the upper) with thickness of 1 and 3mm and the steel (aluminum) flange with 10mm thickness (the lower) and where the bolt positions are changed.

It is important to improve the sealing performance of bolted flanged joints subjected to internal pressure. Recently, bolted joints with flexible flanges of stamped steel have been used in an oil-pan structure of automobile from a lightweight viewpoint. However, it is difficult to improve the sealing performance of flexible flanged bolted joints due to the reduction of the interface pressure. In this paper, a liquid sealant is applied to a box-shape flexible flanged bolted joints subjected to internal pressure in order to improve the sealing performance. In the experiments, a leakage is observed when a box-shape flanged joints in which liquid sealants are applied to the interfaces between aluminum flexible flanges with thickness of 1 and 3 mm and the steel (aluminum) flange with 10 mm thickness. Experiments are also conducted on bolted joints with asbestos gaskets. In addition, the effects of the adjacent bolt distance and bolt preload on the sealing performance are examined.

To meet the requirements for higher horsepower and torque as well as lower fuel consumption and emissions, we have developed a new “Intelligent Variable Valve Timing (VV-i)” system. It gives continuously variable intake cam phasing by up to 60 degrees crank angle (CA) . This system not only increases WOT output by optimizing intake valve closing timing but also reduces fuel consumption and NOx/ HC emissions under part load by increasing intake and exhaust valve overlap on 4 stroke Spark Ignited engines. VVT-i has been applied to optimize a new 3-liter inline 6 engine for higher torque and at the same time better fuel economy with continuous and wide-range cam phasing.