Combustion engine, in particular gas engine, for a vehicle, in particular for a commercial vehicle

一种内燃机、商用车的技术，应用在尤其燃气发动机，能够解决污物敏感性易受干扰等问题，达到可靠成本的效果

Active Publication Date: 2016-03-23
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The measurement of the air mass flow by means of an air mass sensor has however proven to be very susceptible to disturbances, in particular due to its dirt sensitivity

Method used

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  • Combustion engine, in particular gas engine, for a vehicle, in particular for a commercial vehicle
  • Combustion engine, in particular gas engine, for a vehicle, in particular for a commercial vehicle
  • Combustion engine, in particular gas engine, for a vehicle, in particular for a commercial vehicle

Examples

Experimental program
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Effect test

Embodiment Construction

[0074] The air mass flow (arrow 3 ) is supplied to the engine block 10 via the intake tract 25 , wherein the air mass flow 3 here first flows through the compressor 4 (which is a component of the exhaust gas turbocharger 5 ) and then through the Charge air cooler 6. From there, the cooled air mass flow 3 flows via a controllable throttle valve 7 to a gas mixer 8 , to which a natural gas mass flow (arrow 9 ) is additionally fed. From the gas mixer 8 , the natural gas-air gas mixture 26 formed there flows to the cylinder-piston unit 11 , in which the combustion process takes place. The exhaust gas mass flow (arrow 12 ) then flows through the turbine 13 of the exhaust gas turbocharger 5 , wherein the turbine 13 is mechanically coupled to the compressor 4 and drives the compressor 4 .

[0075] Upstream of the turbine 13 , controlled via an AGR control valve 15 , a part of the exhaust gas mass flow is branched off at a branch point 17 as an AGR mass flow 14 . This AGR mass flow 1...

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Abstract

A combustion engine, in particular a gas engine, for a vehicle, in particular for a commercial vehicle, has an intake duct through which a gas, in particular a fuel gas / air / exhaust gas mixture, can be fed to a combustion unit), in particular a cylinder-piston unit, of the combustion engine, and an exhaust gas recirculation system feeding in an exhaust gas from the combustion unit at an exhaust gas admission region to the gas fed to the combustion unit. At least one measuring device that determines the gas mass flow, in particular fuel gas / air / exhaust gas mass flow, and the gas temperature, in particular fuel gas / air / exhaust gas temperature, is arranged in the intake duct upstream of the combustion unit and downstream of the exhaust gas admission region. At least one temperature sensor is arranged both in the exhaust gas recirculation system and in the intake duct, in each case upstream of the exhaust gas admission region, in addition to the measuring device, in order to determine a recirculated exhaust gas mass flow and / or an air mass flow fed to the combustion unit.

Description

technical field [0001] The invention relates to an internal combustion engine, in particular a gas engine (gasmotor), for a vehicle, in particular for a commercial vehicle, according to the preamble of claim 1 , a gas engine for a vehicle according to the preamble of claim 9 A method of operating an internal combustion engine, in particular a gas engine, and a vehicle, in particular a commercial vehicle, according to claim 15 , having the internal combustion engine and / or for carrying out the method. Background technique [0002] In order to comply with the applicable exhaust gas regulations, it is known to switch gas engines or combustible gas engines, for example natural gas engines, from lean-mix operation to stoichiometric operation. To compensate for the resulting loss of efficiency of the gas engine or to increase the efficiency of the gas engine, for example a cooled and regulated exhaust gas recirculation (AGR), by means of which part of the exhaust gas of the gas en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/18
CPCF02D41/0072F02D41/1445F02D41/1446F02D19/02F02D41/0027F02M26/05F02M26/47Y02T10/30Y02T10/40F02D41/0007F02D41/0065F02D2041/0067F02D2041/0075
Inventor F.W.普吕姆B.巴齐拉J.魏斯
Owner MAN TRUCK & BUS AG
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