Assertion: detroit diesel engine | /r/HasProperty | followed by usual roots blower
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text: Whereas some EMD and Detroit Diesel engines employ turbocharging, only such EMD engines employ a turbo-compressor system; such Detroit Diesel engines employ a conventional turbocharger, in some cases with intercooling, followed by the usual Roots blower, as a turbo-compressor system would be too costly for these very cost-sensitive and highly competitive applications.