Dynamic
GAS AND DIESEL INJECTION
From a Poor Cousin to Everybody's Favorite: The Diesel Engine
In the 1990s, the diesel engine underwent an astounding change. It progressed from being a loud, dirty and cumbersome commercial vehicle engine to a modern, economical high-tech unit in which not only low CO2 emissions are achieved, but also a high level of driving pleasure and comfort. This success was due, above all, to the optimization of the combustion process by switching to diesel direct injection, enabling the injection pressure to be initially increased to over 1,000 bar. Driven by performance increases and also by the ever more stringent global environmental requirements, injection pressures have now risen to up to more than 2,000 bar. Injection systems with an injection pressure of up to 3,000 bar are currently being developed for future engine generations. This increase in system pressure, however, requires high-quality individual parts whose static and dynamic strengths may withstand maximum stress. Forged and extruded components made partly made from high-strength materials with a high degree of purity are particularly suitable for fulfilling such demands.
Trimmed to be Environmentally Friendly: The Gasoline Engine with Direct Injection
Increasing demands for low gasoline consumption and thus low CO2 emissions at the lowest exhaust emission specifications are rendering a similar process of change necessary in the gasoline engine as that previously undergone by the diesel engine. Modern gasoline engines with direct injection achieve considerable reductions in consumption and low exhaust emissions without compromising the high level of driving pleasure and comfort enjoyed in previous generations. The fuel injection system applied is similar in design to the common rail used in the diesel engine, the only difference being that the high pressures prevailing in the latter are not required. Gasoline, however, places particularly high demands on the steel materials employed when it comes to chemical resistance. This will present even more of a challenge with the planned higher level of ethanol biofuel added to gasoline.
The Hirschvogel Automotive Group produces individual components for modern high-performance injection systems, both for diesel injection systems such as common rail, pump-nozzle or pump-channel-nozzle and distribution fuel injection pumps as well as for gasoline direct injection.
Depending on the part, both conventional hot forging processes and modern warm lateral extrusion operations or process combinations of hot and cold forging are employed. If required, the parts can also be soft-machined.
Intensive research and development and many years' experience combined with production engineering facilities that enable a broad diversity of processes make the Hirschvogel Automotive Group a suitable supplier for all gas and diesel injection components - a supplier who can provide the customer with a solution that is optimum for the particular part and that is tailored to the functional requirements.
This “one-stop-shop” principle is appreciated by our customers.
