Claims:1. A system to reduce particulate emissions in a vehicle, 5 the system
adapted to be retrofit on to a exhaust manifold of the said vehicle, said
vehicle comprising at least an engine control unit, the system
comprising:
a first temperature sensor (101) downstream of the retrofit
10 interface;
a fuel injection unit (102) downstream of the first temperature
sensor (101), the fuel injection unit (102) adapted to be in fluid
communication with a fuel return line (112) of the vehicle;
an oxidation catalyst (103) downstream of the fuel injection
15 unit (102);
a second temperature sensor (104) downstream of the oxidation
catalyst (103);
a diesel particulate filter (105) downstream of the second
temperature sensor (104);
20 a pressure sensor (106) connected across the ends of the diesel
particulate filter (105);
a microprocessor (107) in communication with the first
temperature sensor (101), the second temperature sensor (104),
the pressure sensor (106), the microprocessor (107) further in
25 communication with the engine control unit of the said vehicle;
and at least
a power source (108) driving the first temperature sensor (101),
the second temperature sensor (104), the pressure sensor (106),
and at least the microprocessor (107).
2. The system to reduce particulate emissions in a vehicle 5 as claimed in
claim 1, wherein the injection unit is actuated by the microprocessor
(107).
3. The system to reduce particulate emissions in a vehicle as claimed in
claim 1, wherein the microprocessor (107) is further in
10 communication with a wheel speed sensor. , Description:The present disclosure proposes a retrofit system (100) to reduce
particulate emissions in a vehicle. The system is adapted 5 to be retrofit on
to an exhaust manifold of the said vehicle. The said retrofit system (100)
comprises a first temperature sensor (101), a fuel injection unit (102), an
oxidation catalyst (103), a second temperature sensor (104), a diesel
particulate filter (105) (DPF (105)), a pressure sensor (106), a
10 microprocessor (107) and at least a power source (108). The soot trapped
in DPF (105) will be burnt through means of active regeneration by
injecting diesel into exhaust line which will oxidize in oxidation catalyst
(103) and the exothermic reaction will ensure high temperature in DPF
(105) (~600degC). In this retrofit system (100), fuel injection unit (102)
15 will have fuel hydraulics to ensure required diesel at defined pressure is
being injected into the exhaust line upstream oxidation catalyst (103).