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Research and Development

The "bond" between the engine and the gasket

The interior of an automobile engine's cylinder is subject to extreme conditions, with the piston running up to 6,000 times each minute, as well as the vibration, shock this generates, and the high heat and pressure resulting from combustion in the cylinder. Under such conditions, gasket only about one millimeter thick are required to exhibit proper mechanical strength, heat resistance, durability, and ability to maintain their resilience. It is no exaggeration to say gaskets are critical parts that have a tremendous effect on an engine performance.

Taking the "Concept-In" Approach

The relationship between engines and gaskets is so close that it is said one can't know how the gasket should be formed without knowing the engine it is to be used with. This means that the development of a gasket starts with the development of that engine. Development at Nippon Gasket is based on the "Concept-in" approach, whereby we repeatedly meet with the manufacturer for detailed discussions, develop gaskets optimally suited for that engine, and following rigorous evaluation and testing to ensure we can follow through on our pledges for safety and reliability, we then offer the product to the manufacturer.

Gasket Development Process

The gasket design starts with close, detailed discussions between the engine development staff and the gasket development staff. Following completion of the basic design, extensive use is made of CAE to evaluate the characteristics of forming the gasket. With the engine team joining in, defects are discovered and corrected and the prototype drawings are completed. Afterwards, the gasket must clear a basic evaluation (materials evaluation), an evaluation for suitability (product evaluation), and then an overall evaluation (evaluation of the gasket's durability with the engine). This is followed by initial mass production of the gasket.

Seal Surface Pressure CAE Analysis Fatigue Simulation Test
Seal Surface Pressure CAE Analysis Fatigue Simulation Test
Fatigue Test Using Actual Cylinder Block Thermal Shock Simulation Test Engine Durability Test
Fatigue Test Using
Actual Cylinder Block
Thermal Shock
Simulation Test
Engine Durability Test