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A wastegate is a valve that controls the flow of exhaust gases to the turbine wheel in a turbocharged engine system. [1] Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to ...
This design has a lower flow rate compared to VNT types so a wastegate may be incorporated with this design. [5] VGTs may be controlled by a membrane vacuum actuator, electric servo, 3-phase electric actuation, hydraulic actuator, or pneumatic actuator using air brake pressure. Unlike fixed-geometry turbines, VGTs do not require a wastegate. [6]
The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. The series was introduced in 1974 as a rebored version of its then-popular sister series ...
Research into smaller turbo-diesel engines for passenger cars was undertaken by several companies through the 1960s and 1970s. Rover built a prototype 2.5 L four-cylinder turbo-diesel in 1963, [citation needed] and Mercedes-Benz used a five-cylinder intercooled turbo-diesel engine in the 1976 Mercedes-Benz C111-IID experimental vehicle. [24]
The purpose of a boost controller is to reduce the boost pressure seen by the wastegate 's reference port, in order to trick the wastegate into allowing higher boost pressures than it was designed for. [1] Many boost controllers use a needle valve that is opened and closed by an electric solenoid. By varying the pulse width to the solenoid, the ...
The turbocharger fitted to the V8 engine was a small-diameter Garrett T5 model with integral wastegate, manufactured by Garrett AiResearch, and produced a maximum of 5 psi (34 kPa) boost at 2200 rpm. The engine had 10.25:1 compression and a single-barrel carburetor.
Commanded throttle actuator control and relative throttle position 6D: 109: 11 Fuel pressure control system 6E: 110: 9 Injection pressure control system 6F: 111: 3 Turbocharger compressor inlet pressure 70: 112: 10 Boost pressure control 71: 113: 6 Variable Geometry turbo (VGT) control 72: 114: 5 Wastegate control 73: 115: 5 Exhaust pressure 74 ...
Changes for the 1989 model year include modifications to the wastegate actuator, feed location and engine management increased power output by 1.5 kW (2 hp; 2 PS) on the turbo model. The engine mount and brace were also revised in late 1989. The changes made to the cross member and mounts made to accommodate the (1JZ engine) for Japanese models.
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