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ABB公司在开发包括多种尺寸规格的VTR．．4P新系列高压比涡轮增压器中正在取得稳步进展。该系列涡轮增压器的压比可达到5．0：1，专门设计用于平均有效压力达26巴（2．6MPa）及以上的四冲程柴油机（这类高强化柴油机在全负荷和超负荷下要求涡轮增压器压气机压比分别达4.5：1和5
ABB is developing VTRs that include a variety of sizes. . 4P new series of high pressure turbocharger is making steady progress. This series turbocharger has a pressure ratio of up to 5.0: 1 and is specifically designed for four-stroke diesel engines with an average effective pressure of 26 bar (2.6 MPa) and above Under the requirements of turbocharger compressor pressure ratio of 4.5: 1 and 5 respectively