A bypass intake air heating device

Abstract

This specification discloses a bypass intake heating device, including a bypass pipeline, a blower, a fuel steam generator, a fuel catalytic oxidizer, and a controller, wherein: the bypass pipeline is divided into a front section of the pipeline and a rear section of the pipeline; The front section of the pipeline is provided with a first heating device and a first temperature sensor, and the rear section of the pipeline is wrapped with thermal insulation material; the blower is arranged at the interface between the bypass pipeline and the intake pipeline; the fuel vapor generating device includes a built-in oil pump The fuel tank, fuel rail, fuel injector, fuel injector adapter and metal mesh, wherein the fuel injector is installed in the middle of the pipeline front section of the bypass pipeline through the fuel injector adapter, and the fuel injector adapter A metal mesh is provided at the interface with the front section of the pipeline, and the metal mesh is provided with a second heating device and a second temperature sensor; the fuel catalytic oxidizer is provided with a third heating device and a third temperature sensor, and the fuel catalytic oxidation There is a fuel catalyst inside the device.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a bypass intake air heating device. Background technique [0002] At present, the diesel engine is in a low temperature environment, due to the low intake air temperature, the engine is difficult to start, and the cold start of the diesel engine at low temperature is difficult. At low temperature, the air intake temperature and the cylinder liner of the diesel engine are the same as the ambient temperature, the piston compresses to the top dead center to dissipate heat, the temperature at the end of compression is low, the diesel oil is poorly crushed and atomized, and it is difficult to compress and ignite. The existing diesel engine air intake preheating device mainly heats the air in the form of electric heating rods. Due to the poor thermal conductivity of the air and the limited maximum power of the on-board battery, it usually takes a long time to wait for heating. For a d...

AI Technical Summary

Problems solved by technology

The existing diesel engine air intake preheating device mainly heats the air in the form of an electric heating rod. Due to the poor thermal conductivity of the air, the maximum power of the vehicle battery is limited, and it usually takes a long time to wait for heating.

For a diesel engine with a large displacement, more heat is often required for air intake heating, all relying on the form of batteries and electric heating rods, which will cause the battery to be too large

Images