Hartmuth Kraemer

Title: Hartmuth Kraemer: Innovator in Fuel Feed Technology

Introduction

Hartmuth Kraemer is a notable inventor based in Ditzingen, Germany. He has made significant contributions to the field of fuel feed technology, holding a total of 3 patents. His work primarily focuses on improving the efficiency and reliability of fuel delivery systems for internal combustion engines.

Latest Patents

Kraemer's latest patents include an innovative assembly for feeding fuel from a supply tank to an internal combustion engine. This fuel feed assembly features a roller-cell pump type, where the pump rotor rotates eccentrically within a pumping chamber. The design incorporates multiple rollers guided in radial grooves of the disk-shaped pump rotor, ensuring uniform distribution over the circumference. As the pump rotor rotates, centrifugal force causes the rollers to run along a bore wall of an intermediate ring, which forms a running track. The volume within the pumping chamber decreases from the suction port to the delivery port due to the eccentricity of the pump rotor. Additionally, a narrow-gap region is strategically designed to ensure that the pump working spaces passing through it are completely closed.

Another significant patent by Kraemer is an apparatus for feeding fuel to a motor vehicle engine from a fuel tank. This apparatus includes a pump portion and a direct current drive motor housed within a component through which the fuel flows. The design features a commutator device with brushes located on both the positive and negative sides, along with brush contact springs made from electrically conductive material. To enhance the reliability of the apparatus, a negative potential is applied to the brush contact springs, ensuring that they are electrically insulated from the commutator brushes on the positive side.

Career Highlights

Kraemer is currently employed at Robert Bosch, a leading company in automotive technology and engineering. His work at Bosch has allowed him to develop and refine his innovative ideas in fuel feed systems, contributing to the advancement of automotive technology.

Collaborations

Throughout his career, Kraemer has collaborated with esteemed colleagues such as Ernst Zolda and Juergen Treiber. These collaborations have fostered a creative environment that has led to the development of cutting-edge technologies in the automotive sector.

Conclusion

Hartmuth Kraemer's contributions to fuel feed technology have significantly impacted the automotive industry. His innovative patents and collaborative efforts continue to drive advancements in this essential field.