Development of a Variable-Displacement, Rail-Pressure Supply Pump for Dimethyl Ether

Paper #:
  • 2000-01-0687

Published:
  • 2000-03-06
Citation:
McCandless, J., Teng, H., and Schneyer, J., "Development of a Variable-Displacement, Rail-Pressure Supply Pump for Dimethyl Ether," SAE Technical Paper 2000-01-0687, 2000, https://doi.org/10.4271/2000-01-0687.
Pages:
11
Abstract:
A variable-displacement, 275-bar dimethyl-ether pump for a common-rail injection system has been developed successfully. The pump is an inlet-throttled, wobble-plate-actuated, multi-plunger system. Results of the pump tests/simulations show that the pump can deliver fuel according to the engine requirement at different speeds due to its variable-displacement feature, which is obtained by controlling the discharge phase angle via the two-phase filling characteristic of the pump. Although the pump is designed for dimethyl ether, its concept is general and thus may be applied to the common-rail systems for other fuels.
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