초록 ▼

Diesel exhaust filter and incineration control systems are disclosed which provide intake throttling of the diesel engine as a primary means of raising exhaust temperature in the filter for the periodic burn-off of collected particulates. Various embodiments and supplemental means of increasing exha

Diesel exhaust filter and incineration control systems are disclosed which provide intake throttling of the diesel engine as a primary means of raising exhaust temperature in the filter for the periodic burn-off of collected particulates. Various embodiments and supplemental means of increasing exhaust temperatures are also disclosed.

대표청구항 ▼

A diesel engine exhaust filter and particulate incineration system in combination with a diesel engine having a normally unthrottled air induction system for admitting combustion air to the engine and an exhaust system for carrying off spent combustion products exhausted from the engine, said filter

A diesel engine exhaust filter and particulate incineration system in combination with a diesel engine having a normally unthrottled air induction system for admitting combustion air to the engine and an exhaust system for carrying off spent combustion products exhausted from the engine, said filter and incineration system comprising: a combustion resistant filter disposed in the exhaust system and operative to collect and retain portions of the largely carbonaceous particulate matter contained in the engine exhaust products, said filter being capable of withstanding without substantial damage internal temperatures sufficient to burn the collected particulate matter, a throttle in the induction system and operable to restrict air flow into the engine to reduce the admittance of excess combustion air and thereby increase engine exhaust gas temperature, and means to actuate said throttle periodically during engine operation to an air flow restricting burn mode capable of raising the particulates in said filter to their combustion temperature under certain engine operating conditions and to maintain said throttle mode for an interval adequate to burn retained particulates in the filter.